CVE-2026-114637

HighCVSS 8.7/10Last modified Oct 22, 2026

Description

Traefik from v3.2.0 before v3.7.14 contains an authentication bypass vulnerability in the experimental FastProxy connection pool, which fails to pin NTLM/Negotiate-authenticated backend connections to their frontend connection. Unauthenticated clients can be handed a pooled keep-alive backend connection where a victim completed an NTLM or Negotiate handshake, letting them read victim data and act as that victim.

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-488

Affected software

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

VendorProductVersions
traefiktraefik>= 3.2.0, < 3.7.14

References

Timeline

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

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