Undici's cookie header not cleared on cross-origin redirect in fetch
Impact
Undici clears Authorization headers on cross-origin redirects, but does not clear Cookie headers. By design, cookie headers are forbidden request headers, disallowing them to be set in RequestInit.headers in browser environments. Since Undici handles headers more liberally than the specification, there was a disconnect from the assumptions the spec made, and Undici's implementation of fetch.
As such this may lead to accidental leakage of cookie to a 3rd-party site or a malicious attacker who can control the redirection target (ie. an open redirector) to leak the cookie to the 3rd party site.
Patches
This was patched in e041de359221ebeae04c469e8aff4145764e6d76, which is included in version 5.26.2.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | undici | < 5.26.2 | 5.26.2 |
Referencias
- https://github.com/nodejs/undici/security/advisories/GHSA-q768-x9m6-m9qp
- https://github.com/nodejs/undici/security/advisories/GHSA-wqq4-5wpv-mx2g
- https://nvd.nist.gov/vuln/detail/CVE-2023-45143
- https://github.com/nodejs/undici/commit/e041de359221ebeae04c469e8aff4145764e6d76
- https://hackerone.com/reports/2166948
- https://github.com/nodejs/undici
- https://github.com/nodejs/undici/releases/tag/v5.26.2
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y
- Vector CVSS
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L- Debilidad (CWE)
CWE-200- Plataforma
- npm
- Paquete
undici- Publicada
- 16.10.2023
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-wqq4-5wpv-mx2g - 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's cookie header not cleared on cross-origin redirect in fetch esta entrada
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