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CVE-2026-25949

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-25949

Severity

7.5

High

CVSS V3

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Summary

Traefik: TCP readTimeout bypass via STARTTLS on Postgres

Description

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.

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