Vulnerable Library - @stryke/http-0.12.58.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Vulnerabilities
| Vulnerability |
Severity |
 CVSS |
Dependency |
Type |
Fixed in (@stryke/http version) |
Remediation Possible** |
| CVE-2026-6734 |
 High |
7.5 |
undici-7.25.0.tgz |
Transitive |
N/A* |
❌ |
| CVE-2026-12151 |
High |
7.5 |
undici-7.25.0.tgz |
Transitive |
N/A* |
❌ |
| CVE-2026-9697 |
High |
7.4 |
undici-7.25.0.tgz |
Transitive |
N/A* |
❌ |
| CVE-2026-9679 |
 Medium |
5.9 |
undici-7.25.0.tgz |
Transitive |
N/A* |
❌ |
| CVE-2026-9678 |
Medium |
5.9 |
undici-7.25.0.tgz |
Transitive |
N/A* |
❌ |
| CVE-2026-6733 |
 Low |
3.7 |
undici-7.25.0.tgz |
Transitive |
N/A* |
❌ |
| CVE-2026-11525 |
Low |
3.7 |
undici-7.25.0.tgz |
Transitive |
N/A* |
❌ |
*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
CVE-2026-6734
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
- @stryke/http-0.12.58.tgz (Root Library)
- ❌ undici-7.25.0.tgz (Vulnerable Library)
Found in base branch: main
Vulnerability Details
Impact:
When using Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying that the pool's origin matches the requested origin. All requests are dispatched through the pool connected to the first origin, regardless of the intended destination.
This causes cross-origin request routing: credentials and request data intended for origin B are sent to origin A, responses from the wrong origin are trusted, and HTTPS requests may be silently downgraded to HTTP.
Impacted users are applications that use Socks5ProxyAgent (directly or via setGlobalDispatcher) and make requests to more than one origin.
This was introduced in undici 7.23.0 via PR #4385 and affects all versions through 8.1.0.
Patches:
Upgrade to undici v7.26.0 or v8.2.0.
Workarounds:
Use a separate Socks5ProxyAgent instance per origin, or avoid using Socks5ProxyAgent with multiple origins.
Publish Date: 2026-06-17
URL: CVE-2026-6734
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-hm92-r4w5-c3mj
Release Date: 2026-06-17
Fix Resolution: undici - 7.28.0,undici - 8.2.0
Step up your Open Source Security Game with Mend here
CVE-2026-12151
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
- @stryke/http-0.12.58.tgz (Root Library)
- ❌ undici-7.25.0.tgz (Vulnerable Library)
Found in base branch: main
Vulnerability Details
Impact:
The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service.
Affected applications are those using the undici WebSocket client (new WebSocket(...)) or the WebSocketStream API that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint.
All releases starting at undici 6.17.0 are affected.
Patches: Upgrade to undici >= 6.26.0, >= 7.28.0, or >= 8.5.0. Workarounds:
No workaround is available. The fix must be applied through an upgrade.
Publish Date: 2026-06-17
URL: CVE-2026-12151
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-vxpw-j846-p89q
Release Date: 2026-06-17
Fix Resolution: undici - 8.5.0,undici - 7.28.0,undici - 6.27.0,https://github.com/nodejs/undici.git - v7.28.0,https://github.com/nodejs/undici.git - v6.27.0,https://github.com/nodejs/undici.git - v8.5.0
Step up your Open Source Security Game with Mend here
CVE-2026-9697
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
- @stryke/http-0.12.58.tgz (Root Library)
- ❌ undici-7.25.0.tgz (Vulnerable Library)
Found in base branch: main
Vulnerability Details
Impact:
undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI (socks5:// or socks://). The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servername settings.
Applications that pin to an internal or corporate CA via requestTls.ca will, when their proxy URI is SOCKS5, get the default Mozilla CA bundle as the trust anchor instead. Any cert signed by any publicly-trusted CA for the target hostname is accepted, breaking the intended pin and enabling MITM read and tamper of the HTTPS exchange.
Affected applications are those that use undici's ProxyAgent (or Socks5ProxyAgent directly) with SOCKS5 AND rely on requestTls for TLS scope restriction. The bug was introduced in undici 7.23.0 when SOCKS5 support was added.
Patches:
Upgrade to undici v7.28.0 or v8.5.0.
Workarounds:
No workaround is available within the SOCKS5 path. If a SOCKS5 proxy with TLS scope restriction is required and an upgrade is not yet possible, route the traffic through an HTTP-proxy ProxyAgent instead, where requestTls is honored correctly.
Publish Date: 2026-06-17
URL: CVE-2026-9697
CVSS 3 Score Details (7.4)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-vmh5-mc38-953g
Release Date: 2026-06-17
Fix Resolution: undici - 7.28.0,undici - 8.5.0,https://github.com/nodejs/undici.git - v7.28.0,https://github.com/nodejs/undici.git - v8.5.0
Step up your Open Source Security Game with Mend here
CVE-2026-9679
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
- @stryke/http-0.12.58.tgz (Root Library)
- ❌ undici-7.25.0.tgz (Vulnerable Library)
Found in base branch: main
Vulnerability Details
Impact:
undici's cookie parser in parseSetCookie percent-decodes cookie values via qsUnescape, turning encoded sequences like %0D%0A, %00, %3B, and %3D into their literal byte equivalents. RFC 6265 §5.4 does not specify any decoding and browsers do not decode either.
Applications that parse a Set-Cookie header and then forward the parsed value into a response header (proxies, middleware, SSR frameworks) become vulnerable to HTTP response header injection: an attacker-controlled upstream can inject arbitrary Set-Cookie, Location, or Cache-Control headers into the application's downstream response, enabling session fixation, open redirect, or cache poisoning.
Affected applications are those that use undici's cookie parsing (parseSetCookie, parseCookie, getSetCookies) and forward the parsed cookie value into a response header.
This was introduced in undici 7.0.0 via PR #3789.
Patches:
Upgrade to undici v6.26.0, v7.28.0 or v8.5.0.
Workarounds:
If upgrade is not immediately possible, do not forward values returned by parseSetCookie/parseCookie/getSetCookies directly into response headers; sanitize the value first to strip or reject CR, LF, NUL, ;, and = bytes.
Publish Date: 2026-06-17
URL: CVE-2026-9679
CVSS 3 Score Details (5.9)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: High
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-p88m-4jfj-68fv
Release Date: 2026-06-17
Fix Resolution: undici - 7.28.0,undici - 6.27.0,undici - 8.5.0,https://github.com/nodejs/undici.git - v7.28.0,https://github.com/nodejs/undici.git - v6.27.0,https://github.com/nodejs/undici.git - v8.5.0
Step up your Open Source Security Game with Mend here
CVE-2026-9678
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
- @stryke/http-0.12.58.tgz (Root Library)
- ❌ undici-7.25.0.tgz (Vulnerable Library)
Found in base branch: main
Vulnerability Details
Impact:
Undici's cache interceptor incorrectly classifies some responses as cacheable when the upstream Cache-Control header uses whitespace-padded qualified private or no-cache field names such as private=" authorization" or no-cache="\tauthorization". The parser preserves the surrounding whitespace, so later comparisons against the literal authorization field name fail and the response is stored.
In shared-cache mode, this allows a response containing one user's authenticated data to be served from cache to a subsequent caller, including an unauthenticated caller, when both requests resolve to the same cache key.
Affected applications are those that explicitly enable the cache interceptor (interceptors.cache()) in shared mode, forward Authorization headers upstream, and receive cacheable responses with non-canonical qualified private or no-cache directives.
Patches:
Upgrade to undici v7.28.0 or v8.5.0.
Workarounds:
If upgrade is not immediately possible, disable shared-cache mode for traffic that includes Authorization headers, avoid caching responses to authenticated requests, or add Vary: Authorization upstream.
Publish Date: 2026-06-17
URL: CVE-2026-9678
CVSS 3 Score Details (5.9)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-pr7r-676h-xcf6
Release Date: 2026-06-17
Fix Resolution: undici - 7.28.0,undici - 8.5.0
Step up your Open Source Security Game with Mend here
CVE-2026-6733
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
- @stryke/http-0.12.58.tgz (Root Library)
- ❌ undici-7.25.0.tgz (Vulnerable Library)
Found in base branch: main
Vulnerability Details
Impact:
Undici's HTTP/1.1 client is vulnerable to response queue poisoning on reused keep-alive sockets. An attacker-controlled upstream server can inject an unsolicited HTTP/1.1 response onto an idle socket after a request completes. When the client dispatches the next request on that socket, it associates the injected response with the new request, causing responses to be delivered to the wrong requests.
This requires an attacker-controlled or compromised upstream HTTP/1.1 server and keep-alive connection reuse.
Patches:
Upgrade to undici v6.26.0, v7.28.0 or v8.5.0.
Workarounds:
Disable keep-alive connection reuse by setting keepAliveTimeout: 0 on the Client or Pool.
Publish Date: 2026-06-17
URL: CVE-2026-6733
CVSS 3 Score Details (3.7)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-35p6-xmwp-9g52
Release Date: 2026-06-17
Fix Resolution: undici - 7.28.0,undici - 8.5.0,undici - 6.27.0
Step up your Open Source Security Game with Mend here
CVE-2026-11525
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
- @stryke/http-0.12.58.tgz (Root Library)
- ❌ undici-7.25.0.tgz (Vulnerable Library)
Found in base branch: main
Vulnerability Details
Impact:
When undici parses a Set-Cookie header, it accepts any SameSite attribute value that contains Strict, Lax, or None as a substring, rather than the case-insensitive exact match specified by RFC 6265. Non-spec values are silently mapped to one of the three standard tokens. For example, SameSite=NoneOfYourBusiness is parsed as None (the most permissive setting), and SameSite=StrictLax is parsed as Lax (a downgrade from Strict).
Affected applications are those that consume Set-Cookie headers from server responses (for example via undici's fetch or proxy code paths) and then forward or rely on the parsed sameSite attribute. A malicious or non-compliant server can coerce the consumer's view of a cookie's SameSite policy to a weaker value, silently degrading the SameSite enforcement the cookie is supposed to provide.
This was introduced in undici 5.15.0 when the cookies feature was added.
Patches:
Upgrade to undici v6.26.0, v7.28.0 or v8.5.0.
Workarounds:
After parsing a Set-Cookie header, validate that the resulting sameSite attribute is one of 'Strict', 'Lax', or 'None' (exact, case-insensitive) before forwarding or relying on it.
Publish Date: 2026-06-17
URL: CVE-2026-11525
CVSS 3 Score Details (3.7)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-g8m3-5g58-fq7m
Release Date: 2026-06-17
Fix Resolution: undici - 6.27.0,undici - 8.5.0,undici - 7.28.0,https://github.com/nodejs/undici.git - v8.5.0,https://github.com/nodejs/undici.git - v7.28.0,https://github.com/nodejs/undici.git - v6.27.0
Step up your Open Source Security Game with Mend here
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Vulnerabilities
*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
Found in base branch: main
Vulnerability Details
Impact:
When using Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying that the pool's origin matches the requested origin. All requests are dispatched through the pool connected to the first origin, regardless of the intended destination.
This causes cross-origin request routing: credentials and request data intended for origin B are sent to origin A, responses from the wrong origin are trusted, and HTTPS requests may be silently downgraded to HTTP.
Impacted users are applications that use Socks5ProxyAgent (directly or via setGlobalDispatcher) and make requests to more than one origin.
This was introduced in undici 7.23.0 via PR #4385 and affects all versions through 8.1.0.
Patches:
Upgrade to undici v7.26.0 or v8.2.0.
Workarounds:
Use a separate Socks5ProxyAgent instance per origin, or avoid using Socks5ProxyAgent with multiple origins.
Publish Date: 2026-06-17
URL: CVE-2026-6734
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-hm92-r4w5-c3mj
Release Date: 2026-06-17
Fix Resolution: undici - 7.28.0,undici - 8.2.0
Step up your Open Source Security Game with Mend here
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
Found in base branch: main
Vulnerability Details
Impact:
The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service.
Affected applications are those using the undici WebSocket client (new WebSocket(...)) or the WebSocketStream API that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint.
All releases starting at undici 6.17.0 are affected.
Patches: Upgrade to undici >= 6.26.0, >= 7.28.0, or >= 8.5.0. Workarounds:
No workaround is available. The fix must be applied through an upgrade.
Publish Date: 2026-06-17
URL: CVE-2026-12151
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-vxpw-j846-p89q
Release Date: 2026-06-17
Fix Resolution: undici - 8.5.0,undici - 7.28.0,undici - 6.27.0,https://github.com/nodejs/undici.git - v7.28.0,https://github.com/nodejs/undici.git - v6.27.0,https://github.com/nodejs/undici.git - v8.5.0
Step up your Open Source Security Game with Mend here
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
Found in base branch: main
Vulnerability Details
Impact:
undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI (socks5:// or socks://). The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servername settings.
Applications that pin to an internal or corporate CA via requestTls.ca will, when their proxy URI is SOCKS5, get the default Mozilla CA bundle as the trust anchor instead. Any cert signed by any publicly-trusted CA for the target hostname is accepted, breaking the intended pin and enabling MITM read and tamper of the HTTPS exchange.
Affected applications are those that use undici's ProxyAgent (or Socks5ProxyAgent directly) with SOCKS5 AND rely on requestTls for TLS scope restriction. The bug was introduced in undici 7.23.0 when SOCKS5 support was added.
Patches:
Upgrade to undici v7.28.0 or v8.5.0.
Workarounds:
No workaround is available within the SOCKS5 path. If a SOCKS5 proxy with TLS scope restriction is required and an upgrade is not yet possible, route the traffic through an HTTP-proxy ProxyAgent instead, where requestTls is honored correctly.
Publish Date: 2026-06-17
URL: CVE-2026-9697
CVSS 3 Score Details (7.4)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-vmh5-mc38-953g
Release Date: 2026-06-17
Fix Resolution: undici - 7.28.0,undici - 8.5.0,https://github.com/nodejs/undici.git - v7.28.0,https://github.com/nodejs/undici.git - v8.5.0
Step up your Open Source Security Game with Mend here
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
Found in base branch: main
Vulnerability Details
Impact:
undici's cookie parser in parseSetCookie percent-decodes cookie values via qsUnescape, turning encoded sequences like %0D%0A, %00, %3B, and %3D into their literal byte equivalents. RFC 6265 §5.4 does not specify any decoding and browsers do not decode either.
Applications that parse a Set-Cookie header and then forward the parsed value into a response header (proxies, middleware, SSR frameworks) become vulnerable to HTTP response header injection: an attacker-controlled upstream can inject arbitrary Set-Cookie, Location, or Cache-Control headers into the application's downstream response, enabling session fixation, open redirect, or cache poisoning.
Affected applications are those that use undici's cookie parsing (parseSetCookie, parseCookie, getSetCookies) and forward the parsed cookie value into a response header.
This was introduced in undici 7.0.0 via PR #3789.
Patches:
Upgrade to undici v6.26.0, v7.28.0 or v8.5.0.
Workarounds:
If upgrade is not immediately possible, do not forward values returned by parseSetCookie/parseCookie/getSetCookies directly into response headers; sanitize the value first to strip or reject CR, LF, NUL, ;, and = bytes.
Publish Date: 2026-06-17
URL: CVE-2026-9679
CVSS 3 Score Details (5.9)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: High
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-p88m-4jfj-68fv
Release Date: 2026-06-17
Fix Resolution: undici - 7.28.0,undici - 6.27.0,undici - 8.5.0,https://github.com/nodejs/undici.git - v7.28.0,https://github.com/nodejs/undici.git - v6.27.0,https://github.com/nodejs/undici.git - v8.5.0
Step up your Open Source Security Game with Mend here
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
Found in base branch: main
Vulnerability Details
Impact:
Undici's cache interceptor incorrectly classifies some responses as cacheable when the upstream Cache-Control header uses whitespace-padded qualified private or no-cache field names such as private=" authorization" or no-cache="\tauthorization". The parser preserves the surrounding whitespace, so later comparisons against the literal authorization field name fail and the response is stored.
In shared-cache mode, this allows a response containing one user's authenticated data to be served from cache to a subsequent caller, including an unauthenticated caller, when both requests resolve to the same cache key.
Affected applications are those that explicitly enable the cache interceptor (interceptors.cache()) in shared mode, forward Authorization headers upstream, and receive cacheable responses with non-canonical qualified private or no-cache directives.
Patches:
Upgrade to undici v7.28.0 or v8.5.0.
Workarounds:
If upgrade is not immediately possible, disable shared-cache mode for traffic that includes Authorization headers, avoid caching responses to authenticated requests, or add Vary: Authorization upstream.
Publish Date: 2026-06-17
URL: CVE-2026-9678
CVSS 3 Score Details (5.9)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-pr7r-676h-xcf6
Release Date: 2026-06-17
Fix Resolution: undici - 7.28.0,undici - 8.5.0
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Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
Found in base branch: main
Vulnerability Details
Impact:
Undici's HTTP/1.1 client is vulnerable to response queue poisoning on reused keep-alive sockets. An attacker-controlled upstream server can inject an unsolicited HTTP/1.1 response onto an idle socket after a request completes. When the client dispatches the next request on that socket, it associates the injected response with the new request, causing responses to be delivered to the wrong requests.
This requires an attacker-controlled or compromised upstream HTTP/1.1 server and keep-alive connection reuse.
Patches:
Upgrade to undici v6.26.0, v7.28.0 or v8.5.0.
Workarounds:
Disable keep-alive connection reuse by setting keepAliveTimeout: 0 on the Client or Pool.
Publish Date: 2026-06-17
URL: CVE-2026-6733
CVSS 3 Score Details (3.7)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-35p6-xmwp-9g52
Release Date: 2026-06-17
Fix Resolution: undici - 7.28.0,undici - 8.5.0,undici - 6.27.0
Step up your Open Source Security Game with Mend here
Vulnerable Library - undici-7.25.0.tgz
An HTTP/1.1 client, written from scratch for Node.js
Library home page: https://registry.npmjs.org/undici/-/undici-7.25.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/.pnpm/undici@7.25.0/node_modules/undici/package.json,/package.json
Dependency Hierarchy:
Found in base branch: main
Vulnerability Details
Impact:
When undici parses a Set-Cookie header, it accepts any SameSite attribute value that contains Strict, Lax, or None as a substring, rather than the case-insensitive exact match specified by RFC 6265. Non-spec values are silently mapped to one of the three standard tokens. For example, SameSite=NoneOfYourBusiness is parsed as None (the most permissive setting), and SameSite=StrictLax is parsed as Lax (a downgrade from Strict).
Affected applications are those that consume Set-Cookie headers from server responses (for example via undici's fetch or proxy code paths) and then forward or rely on the parsed sameSite attribute. A malicious or non-compliant server can coerce the consumer's view of a cookie's SameSite policy to a weaker value, silently degrading the SameSite enforcement the cookie is supposed to provide.
This was introduced in undici 5.15.0 when the cookies feature was added.
Patches:
Upgrade to undici v6.26.0, v7.28.0 or v8.5.0.
Workarounds:
After parsing a Set-Cookie header, validate that the resulting sameSite attribute is one of 'Strict', 'Lax', or 'None' (exact, case-insensitive) before forwarding or relying on it.
Publish Date: 2026-06-17
URL: CVE-2026-11525
CVSS 3 Score Details (3.7)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-g8m3-5g58-fq7m
Release Date: 2026-06-17
Fix Resolution: undici - 6.27.0,undici - 8.5.0,undici - 7.28.0,https://github.com/nodejs/undici.git - v8.5.0,https://github.com/nodejs/undici.git - v7.28.0,https://github.com/nodejs/undici.git - v6.27.0
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