5.1Mittel

CVE-2026-33433Traefik Vulnerable to BasicAuth/DigestAuth Identity Spoofing via Non-Canonical headerField

traefik traefik; Red Hat Red Hat OpenShift Dev Spaces 3.27 Veröffentlicht: (vor 7 Monaten)

Beschreibung

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.42, 3.6.11, and 3.7.0-ea.3, when `headerField` is configured with a non-canonical HTTP header name (e.g., `x-auth-user` instead of `X-Auth-User`), an authenticated attacker can inject their own canonical version of that header to impersonate any identity to the backend. The backend receives two header entries — the attacker-injected canonical one is read first, overriding Traefik's non-canonical write. Versions 2.11.42, 3.6.11, and 3.7.0-ea.3 patch the issue.

Schwachstellentyp (CWE): CWE-290

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

HerstellerProduktVersionen
openshift devspaces 3.27 —
Red Hat Red Hat OpenShift Dev Spaces 3.27 all versions
traefik traefik < 2.11.42, >= 3.0.0-beta1, < 3.6.11, >= 3.7.0-ea.1, < 3.7.0-ea.3

Referenzen und Patches

CPE-Treffer (NVD) (4)

  • cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* < 2.11.42
  • cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* ≥ 3.0.0 < 3.6.12
  • cpe:2.3:a:traefik:traefik:3.7.0:ea1:*:*:*:*:*:*
  • cpe:2.3:a:traefik:traefik:3.7.0:ea2:*:*:*:*:*:*