CVE-2026-114639

HighCVSS 8.7/10Last modified Oct 22, 2026

Description

Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 contains an authentication bypass because a first request preauthenticated with an Authorization: Negotiate token authenticates a socket in the globally shared backend connection pool, which is never isolated. Unauthenticated attackers on separate frontend connections can be assigned that NTLM/Kerberos-bound socket and perform reads or writes with the victim's identity.

Metrics

CVSS 3.1 8.7/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Weakness enumeration

CWE-287

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
traefiktraefik>= 2.11.0, < 2.11.58
traefiktraefik>= 3.0.0, < 3.7.14

References

Timeline

Published
Oct 22, 2026
Last modified
Oct 22, 2026
NVD status
Undergoing Analysis

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