CVE-2026-25949

Name: CVE-2026-25949
Creator: NVD / NIST
Published: 2026-02-12T20:16:11.227+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2026-25949 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.8, there is a potential vulnerability in Traefik managing STARTTLS requests. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.62%

45.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Traefik	Traefik	< 3.6.8

References

https://github.com/traefik/traefik/commit/31e566e9f1d7888ccb6fbc18bfed427203c35678Patch
https://github.com/traefik/traefik/releases/tag/v3.6.8Product, Release Notes
https://github.com/traefik/traefik/security/advisories/GHSA-89p3-4642-cr2wPatch, Vendor Advisory

Timeline

Published: Feb 12, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-25949?

How severe is CVE-2026-25949?

CVE-2026-25949 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2026-25949?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-25949?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST