Traefik: TCP readTimeout bypass via STARTTLS on Postgres_CVE-2026-25949

7.5 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Basic Information

ID CVE-2026-25949

Source GitHub_M

Published Feb 12, 2026 at 20:01

Affected Product

Vendor traefik

Product traefik

Version < 3.6.8

Affected Versions traefik traefik < 3.6.8

CWE Classification

CWE-400

References

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    "published": "2026-02-12T20:01:19.600Z",
    "modified": "2026-02-12T20:01:19.600Z",
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