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Schwachstellen / CVE-2026-71324

kritisch

CVE-2026-71324

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

Veröffentlicht Geändert CWE 444
In der Trivy Database seit spätestens 24. Okt. 2026, 07:11 UTCWann der Eintrag vor diesem Build hinzukam, ist nicht erfasst.

Einstufung nach Quelle

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

Trivys eigenes Label ist CRITICAL. Kritisch laut NVD. Niedriger laut GHSA (hoch), Red Hat (hoch).

Beschreibung

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.

Betroffene Pakete und behobene Versionen

QuellePaketBehoben in
go::GitHub Security Advisory Gogithub.com/traefik/traefik, github.com/traefik/traefik/v2, github.com/traefik/traefik/v32.11.53 und 1 weitere
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
Alle 10 Einträge aus 7 Quellen zeigen
QuellePaketBehoben in
go::GitHub Security Advisory Gogithub.com/traefik/traefikkein Fix angegeben
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

Referenzen

Alle 14 Referenzen

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.