CERT-FR Advisory: Traefik Vulnerability Allows Remote Denial of Service
CERT-FR published advisory CERTFR-2026-AVI-1439 on 2 November 2026 regarding a remote denial-of-service vulnerability in Traefik, the widely used cloud-native reverse proxy and load balancer. The flaw affects Traefik 2.x versions prior to 2.11.61 and 3.x versions prior to 3.7.17, and allows an attacker to remotely trigger a denial of service. The advisory references the vendor's security bulletin GHSA-xv5x-242w-7hf7, also published 2 November 2026, and directs administrators to apply the available patches.
Entenda a falha
A vulnerabilidade
A remote denial-of-service flaw in Traefik, the reverse proxy and load balancer, according to CERT-FR advisory CERTFR-2026-AVI-1439 of 2 November 2026. Per the advisory, a remote attacker can make the service unavailable. The articles do not give a CVE, the affected component, or whether authentication or a specific configuration is needed. Affected: Traefik 2.x before 2.11.61 and 3.x before 3.7.17. Fixed in 2.11.61 and 3.7.17.
Onde está
The articles name no file, function or setting; the only reference is the vendor advisory GHSA-xv5x-242w-7hf7 in the Traefik GitHub repository.
Como foi descoberta
The articles do not say who found the flaw or how. They only report that the Traefik security bulletin GHSA-xv5x-242w-7hf7 was published on 2 November 2026 and that CERT-FR issued its advisory the same day, pointing administrators to the vendor's bulletin for the patches.
Explicação gerada por IA a partir da matéria e dos artigos, em 04/11/2026 14:24.
Detalhes técnicos
- Remote denial-of-service vulnerability affecting Traefik 2.x (<2.11.61) and 3.x (<3.7.17).
- Reference: Traefik security bulletin GHSA-xv5x-242w-7hf7 (2 November 2026).
Remediação
- Upgrade Traefik to version 2.11.61 or later (2.x branch) or 3.7.17 or later (3.x branch) as specified in the vendor's advisory.
Linha do tempo
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CERT-FR Advisory: Traefik Vulnerability Allows Remote Denial of Service
ler a análise desta fonte ocultar
CERT-FR published advisory CERTFR-2026-AVI-1439 on 2 November 2026 regarding a remote denial-of-service vulnerability in Traefik, the widely used cloud-native reverse proxy and load balancer. The flaw affects Traefik 2.x versions prior to 2.11.61 and 3.x versions prior to 3.7.17, and allows an attacker to remotely trigger a denial of service. The advisory references the vendor's security bulletin GHSA-xv5x-242w-7hf7, also published 2 November 2026, and directs administrators to apply the available patches.
Technical Details
- Remote denial-of-service vulnerability affecting Traefik 2.x (<2.11.61) and 3.x (<3.7.17).
- Reference: Traefik security bulletin GHSA-xv5x-242w-7hf7 (2 November 2026).
Remediation
- Upgrade Traefik to version 2.11.61 or later (2.x branch) or 3.7.17 or later (3.x branch) as specified in the vendor's advisory.