CVE-2026-109869
- Source
- https://cve.org/CVERecord?id=CVE-2026-109869
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109869.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-109869
- Aliases
-
- GHSA-xjj6-f33q-929c
- Downstream
- Published
- 2026-10-15T18:08:31Z
- Modified
- 2026-10-16T02:47:59Z
- 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
-
undici is an HTTP client library for Node.js. In versions 6.23.0 through 6.29.0, 7.18.0 through 7.30.0, and 8.0.0 through 8.12.1, its fetch() implementation 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 because of 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, so the early close surfaces a content-length mismatch on the orphaned stream, which Node.js treats as an unhandled error and terminates the process. A remote, unauthenticated server can trigger this with a single response, even when the application correctly catches the fetch() rejection, resulting in a denial of service. The issue is fixed in undici 6.29.1, 7.30.1, and 8.12.2, and users should upgrade to one of those versions or later. There is no workaround.
- Database specific
{ "cna_assigner": "openjs", "cwe_ids": [ "CWE-248", "CWE-459" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109869.json" }- References