CERT-FR Flags Traefik DoS Vulnerability
A remote denial-of-service flaw in Traefik affects versions before 2.11.61 and 3.7.17; patches are available.
Sourcecert.cyber.gouv.fr — open the original
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CERT-FR published an advisory describing a denial-of-service vulnerability affecting Traefik, a widely used reverse proxy and load balancer. The flaw impacts Traefik 2.x versions prior to 2.11.61 and 3.x versions prior to 3.7.17, allowing a remote attacker to disrupt service availability. The advisory does not indicate active exploitation in the wild.
Defenders running Traefik should consult the vendor's GitHub security advisory (GHSA-xv5x-242w-7hf7) and upgrade to the patched versions (2.11.61 or 3.7.17 and later) as soon as feasible. No CVE identifier was provided in this bulletin; organizations should track the GHSA reference for patch management and verification purposes.
Source reporting: https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1439
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