GHSA-xjj6-f33q-929c
Suggest an improvement- Source
- https://github.com/advisories/GHSA-xjj6-f33q-929c
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-xjj6-f33q-929c/GHSA-xjj6-f33q-929c.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-xjj6-f33q-929c
- Aliases
- Published
- 2026-10-23T22:14:31Z
- Modified
- 2026-10-23T22:30:05Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- undici vulnerable to Denial of Service via unhandled error on excessive content-encodings
- Details
-
Impact
undici's
fetch()crashes the Node.js process when a malicious server returns a response with more than five content codings and closes the connection before sending the body. undici rejects such responses (a content-encoding limit), but it created the internal response stream before that check and returned without attaching an error listener or aborting the request. The early close then surfaces a content-length mismatch on that orphaned internal stream, which Node.js treats as an unhandlederrorand terminates the process. A remote, unauthenticated server can trigger this with a single response, even when the application correctly catches thefetch()rejection. undici 6.x, 7.x, and 8.x are affected.Patches
Upgrade to
6.29.1,7.30.1, or8.12.2. undici now validates the content-encoding chain before creating the internal body stream and aborts the response when the limit is exceeded, so no error can surface on an orphaned stream.Workarounds
None.
- Database specific
{ "cwe_ids": [ "CWE-248", "CWE-459" ], "github_reviewed": true, "github_reviewed_at": "2026-10-23T22:14:31Z", "nvd_published_at": "2026-10-15T19:17:21Z", "severity": "HIGH" }- References
-
- https://github.com/nodejs/undici/security/advisories/GHSA-xjj6-f33q-929c
- https://nvd.nist.gov/vuln/detail/CVE-2026-109869
- https://github.com/nodejs/undici/commit/07ded4941b1e72afec862958c3b8ddf468f3b429
- https://github.com/nodejs/undici/commit/1325a87dfb3492f8e87e6b0a84b3bda4e82e3436
- https://github.com/nodejs/undici/commit/b5084c7dc239172d75c336b1cd51ddac023938a5
- https://cna.openjsf.org/security-advisories.html
- https://github.com/nodejs/undici
- https://github.com/nodejs/undici/releases/tag/v6.29.1
- https://github.com/nodejs/undici/releases/tag/v7.30.1
- https://github.com/nodejs/undici/releases/tag/v8.12.2
Affected packages
npm / undici
Package
- Name
- undici
- View open source insights on deps.dev
- Purl
- pkg:npm/undici
npm / undici
Package
- Name
- undici
- View open source insights on deps.dev
- Purl
- pkg:npm/undici
npm / undici
Package
- Name
- undici
- View open source insights on deps.dev
- Purl
- pkg:npm/undici