CVE-2026-22045
CVE-2026-22045 · Traefik's ACME TLS-ALPN fast path lacks timeouts and close on handshake stall
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.35 and 3.6.7, there is a potential vulnerability in Traefik ACME TLS certificates' automatic generation: the ACME TLS-ALPN fast path can allow unauthenticated clients to tie up go routines and file descriptors indefinitely when the ACME TLS challenge is enabled. A malicious client can open many connections, send a minimal ClientHello with acme-tls/1, then stop responding, leading to denial of service of the entry point. The vulnerability is fixed in 2.11.35 and 3.6.7.
CVSS 5.9 · Moyenne · EPSS 0,3%
- Publication
- Mise à jour
Pile logicielle: web
Produits et versions concernés
traefik
- Versions du logiciel
- < 2.11.35: Concernée
- >=3.0.0-beta1, < 3.6.7: Concernée
Aucun correctif publié
Sources originales
- https://github.com/traefik/traefik/security/advisories/GHSA-cwjm-3f7h-9hwq
- https://github.com/traefik/traefik/commit/e9f3089e9045812bcf1b410a9d40568917b26c3d
- https://github.com/traefik/traefik/releases/tag/v2.11.35
- https://github.com/traefik/traefik/releases/tag/v3.6.7
- https://nvd.nist.gov/vuln/detail/CVE-2026-22045