crítica
CVE-2026-85597
github.com/traefik/traefik: Traefik: Authentication bypass via TLS option conflict
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.
Severidad por fuente
NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Red Hat7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
La etiqueta propia de Trivy es CRITICAL. Crítica según NVD. Más baja según Red Hat (alta).
Descripción
Traefik before v2.11.55 and v3.0.0 through v3.7.10 contain a TLS option conflict resolution vulnerability that allows unauthenticated attackers to bypass client-certificate authentication by creating conflicting TLS options on multi-host routers. Attackers can reach protected backends by exploiting shared TLS resolution across multiple hostnames in a single router rule, causing the strict mTLS requirement to fall back to default options for all hosts.
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| minimos | traefik-3, traefik-fips-3 | 3.7.11-r0 |
| rapidfort alpine 3.20 | traefik | 3.7.11-r0 |
| rapidfort alpine 3.21 | traefik | 3.7.11-r0 |
| rapidfort alpine 3.22 | traefik | 3.7.11-r0 |
| rapidfort alpine 3.23 | traefik | 3.7.11-r0 |
| rapidfort alpine 3.24 | traefik | 3.7.11-r0 |
Mostrar las 7 entradas de 6 fuentes
| Fuente | Paquete | Corregido en |
|---|---|---|
| minimos | traefik-3 | 3.7.11-r0 |
| minimos | traefik-fips-3 | 3.7.11-r0 |
| rapidfort alpine 3.20 | traefik | 3.7.11-r0 |
| rapidfort alpine 3.21 | traefik | 3.7.11-r0 |
| rapidfort alpine 3.22 | traefik | 3.7.11-r0 |
| rapidfort alpine 3.23 | traefik | 3.7.11-r0 |
| rapidfort alpine 3.24 | traefik | 3.7.11-r0 |
Referencias
- https://access.redhat.com/security/cve/CVE-2026-85597
- https://github.com/traefik/traefik/security/advisories/GHSA-g55h-rg46-x9c5
- https://nvd.nist.gov/vuln/detail/CVE-2026-85597
- https://www.cve.org/CVERecord?id=CVE-2026-85597
- https://www.vulncheck.com/advisories/traefik-before-2.11.55-mtls-bypass-via-tls-option-conflict