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Vulnerabilidades / CVE-2026-71324

crítica

CVE-2026-71324

github.com/traefik/traefik: Traefik: Information disclosure via response poisoning in shared backend pool

Publicada Modificada CWE 444
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.

Severidad por fuente

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
GHSA7.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Red Hat8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

La etiqueta propia de Trivy es CRITICAL. Crítica según NVD. Más baja según GHSA (alta), Red Hat (alta).

Descripción

Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.53, 3.6.24, and 3.7.9, Traefik's default HTTP reverse proxy forwards a plain HTTP/2 or HTTP/3 CONNECT request and its body to an HTTP/1.1 upstream through a shared net/http.Transport. When the upstream answers the CONNECT with a keep-alive non-2xx response and does not drain the body, Traefik returns the desynchronized backend socket to its shared pool and reuses it for other clients. An unauthenticated attacker can use this behavior to make a different client read the attacker's smuggled response, which can include authenticated or private content from another request. The ForwardAuth middleware with forwardBody true and preserveRequestMethod true can re-issue a CONNECT with the buffered body attached, exposing the auth-client pool to the same desynchronization. This issue is fixed in 2.11.53, 3.6.24, and 3.7.9.

Paquetes afectados y versiones corregidas

FuentePaqueteCorregido en
go::GitHub Security Advisory Gogithub.com/traefik/traefik, github.com/traefik/traefik/v2, github.com/traefik/traefik/v32.11.53 y 1 más
minimostraefik-3, traefik-fips-33.7.9-r0
rapidfort alpine 3.20traefik3.7.9-r0
rapidfort alpine 3.21traefik3.7.9-r0
rapidfort alpine 3.22traefik3.7.9-r0
rapidfort alpine 3.23traefik3.7.9-r0
rapidfort alpine 3.24traefik3.7.9-r0
Mostrar las 10 entradas de 7 fuentes
FuentePaqueteCorregido en
go::GitHub Security Advisory Gogithub.com/traefik/traefiksin corrección indicada
go::GitHub Security Advisory Gogithub.com/traefik/traefik/v22.11.53
go::GitHub Security Advisory Gogithub.com/traefik/traefik/v33.6.24, 3.7.9
minimostraefik-33.7.9-r0
minimostraefik-fips-33.7.9-r0
rapidfort alpine 3.20traefik3.7.9-r0
rapidfort alpine 3.21traefik3.7.9-r0
rapidfort alpine 3.22traefik3.7.9-r0
rapidfort alpine 3.23traefik3.7.9-r0
rapidfort alpine 3.24traefik3.7.9-r0

Referencias

Las 14 referencias

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.