CVE-2026-25949: Traefik

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.8, there is a potential vulnerability in Traefik managing STARTTLS requests. An unauthenticated client can bypass Traefik entrypoint respondingTimeouts.readTimeout by sending the 8-byte Postgres SSLRequest (STARTTLS) prelude and then stalling, causing connections to remain open indefinitely, leading to a denial of service. This vulnerability is fixed in 3.6.8.

Affected products

• Traefik Traefik: before 3.6.8 (fixed in 3.6.8)

Published 2026-02-12. Last modified 2026-07-15.