CVE-2026-114637
CVE-2026-114637 · Traefik v3.2.0 before v3.7.14 FastProxy NTLM/Negotiate Connection Pool Identity Leak
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 7.0 · High · EPSS 0.3% · Fix available
- Published
- Updated
Stack: web
Affected products and versions
traefik
- Versions
- ≥ 3.2.0, < 3.7.14: Affected (semver)
- 3.7.14: Not affected (semver)
Update to 3.7.14