undici vulnerable to Denial of Service via WebSocketStream unclean close
Impact
undici's WebSocketStream crashes the client process when a WebSocket connection is closed abruptly without a close handshake. On such an unclean close, the internal socket-close handler calls abort() on the writable stream even when the application holds a writer lock. Per the WHATWG Streams standard, aborting a locked stream returns a promise that rejects with a TypeError, and the handler discards that promise. The unobserved rejection surfaces as an unhandledRejection and, under Node.js's default behavior, terminates the process.
A malicious or compromised WebSocket server can crash a client with a single connection teardown (a TCP reset, a proxy teardown, or a protocol-violating frame). Affected applications are those using the WebSocketStream API and writing through a writer, which is the standard way to write.
All releases from undici 7.0.0 are affected. WebSocketStream was introduced in 7.0.0.
Patches
Upgrade to undici v7.29.1 or v8.10.2.
Workarounds
No workaround is available.
Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | undici | >= 7.0.0, < 7.29.1, >= 8.0.0, < 8.10.2 | 7.29.1, 8.10.2 |
Referencias
- https://github.com/nodejs/undici/security/advisories/GHSA-rx4f-c7p8-82vq
- https://nvd.nist.gov/vuln/detail/CVE-2026-85014
- https://github.com/nodejs/undici/commit/1858656ebb1e919311c1f31613dfd581b7214349
- https://github.com/nodejs/undici/commit/662d0ea671fe64139e79533c913fce412765e1d7
- https://cna.openjsf.org/security-advisories.html
- https://github.com/nodejs/undici
- https://github.com/nodejs/undici/releases/tag/v7.29.1
- https://github.com/nodejs/undici/releases/tag/v8.10.2
- Vector CVSS
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H- Debilidad (CWE)
CWE-248, CWE-754- Plataforma
- npm
- Paquete
undici- Publicada
- 29.09.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-rx4f-c7p8-82vq - CC BY 4.0
Historial de vulnerabilidades: undici
Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 46
- Primera → última
- 06.2022 09.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 13
- Media 21
- Baja 12
Divulgaciones por año
- 2022: 5
- 2023: 3
- 2024: 5
- 2025: 2
- 2026: 31
-
undici vulnerable to Denial of Service via WebSocketStream unclean close esta entrada
Identifica las vulnerabilidades de tu aplicación
Con la integración de DockRay y el inventario de software activado, DockRay compara las versiones notificadas de los componentes con las vulnerabilidades conocidas y avisa de las coincidencias confirmadas. La cobertura depende de la tecnología compatible y de los avisos disponibles.