CVE-2026-40895: fallo de gravedad media en follow-redirects
follow-redirects: Custom Authentication Headers Leaked to Cross-Domain Redirect Targets
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.9epss 0.5%
follow-redirects is an open source, drop-in replacement for Node's `http` and `https` modules that automatically follows redirects. Prior to 1.16.0, when an HTTP request follows a cross-domain redirect (301/302/307/308), follow-redirects only strips authorization, proxy-authorization, and cookie headers (matched by regex at index.js). Any custom authentication header (e.g., X-API-Key, X-Auth-Token, Api-Key, Token) is forwarded verbatim to the redirect target. This vulnerability is fixed in 1.16.0.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Productos afectados
follow-redirects · follow-redirectsCVEs relacionadas — follow-redirects
En el mismo producto, de las más peligrosas a las menos.
CVE-2024-28849MEDIUMProxy-Authorization header kept across hosts in follow-redirectsEPSS 1.0%CVE-2026-111756HIGHfollow-redirects array-form headers bypass cross-origin credential strippingEPSS 0.5%CVE-2026-111755HIGHfollow-redirects sensitiveHeaders regex escaping can expose credential headersEPSS 0.5%CVE-2026-116689MEDIUMfollow-redirects: Cross-realm sensitiveHeaders arrays are discarded and custom credentials can follow redirectsEPSS 0.3%
Referencias
https://access.redhat.com/errata/RHSA-2026:13826https://access.redhat.com/errata/RHSA-2026:14937https://access.redhat.com/errata/RHSA-2026:16476https://access.redhat.com/errata/RHSA-2026:16532https://access.redhat.com/errata/RHSA-2026:16534https://access.redhat.com/errata/RHSA-2026:16535https://access.redhat.com/errata/RHSA-2026:16542https://access.redhat.com/errata/RHSA-2026:16874https://access.redhat.com/errata/RHSA-2026:17657https://access.redhat.com/errata/RHSA-2026:17699https://access.redhat.com/errata/RHSA-2026:17789https://access.redhat.com/errata/RHSA-2026:19109