CVE-2026-88011mediumCWE-290

CVE-2026-88011: falha de média gravidade em traefik

Traefik: ForwardAuth identity spoofing via dot-form header alias

Publicada em · Atualizada em

Seguir esta CVE+ Monitorar traefik+ Monitorar github.com/traefik/traefik

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 5.3epss 0.4%
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User while normalization-prone CGI, WSGI, PHP, and NGINX backends collapse both names. A backend can consequently consume the client value instead of the identity Traefik asserted, allowing identity spoofing for any header managed by Traefik. The aliasHeadersStrategy protection is disabled by default and must be configured as delete or reject. The mitigation is available in 2.11.56 and 3.7.12.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Produtos afetados
traefik · traefik
CVEs relacionadas — traefik

No mesmo produto, das mais perigosas para as menos.

CVE-2026-85595CRITICALTraefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuthEPSS 2.5%CVE-2022-23632HIGHTraefik skips the router TLS configuration when the host header is an FQDNEPSS 1.7%CVE-2024-45410CRITICALHTTP client can remove the X-Forwarded headers in TraefikEPSS 1.5%CVE-2022-39271HIGHTraefik HTTP/2 connections management could cause a denial of serviceEPSS 1.4%CVE-2025-54386HIGHTraefik's Client Plugin is Vulnerable to Path Traversal, Arbitrary File Overwrites and Remote Code ExecutionEPSS 1.3%CVE-2023-47633HIGHUncontrolled Resource Consumption in TraefikEPSS 1.3%