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Version: v1.2.x

CVE-2026-71324

CVE Details

Visit the official vulnerability details page for CVE-2026-71324 to learn more.

Initial Publication

08/06/2026

Last Update

08/06/2026

Third Party Dependency

github.com/traefik/traefik/v3

NIST CVE Summary

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.

CVE Severity

7

Our Official Summary

Investigation is ongoing to determine how this vulnerability affects our products.

Status

Received

Affected Products & Versions

VersionPaletteAIPaletteAI VerteX
1.2.1⚠️ Impacted⚠️ Impacted
1.1.8⚠️ Impacted⚠️ Impacted

Revision History

No revisions available.