Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
Sign in to view the affected projects.
No advisories yet.
Wed, 04 Nov 2026 15:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Traefik 2.x before 2.11.60 and 3.x before 3.7.16 sends ForwardAuth subrequests (and, in 3.7, Ingress NGINX auth-url requests) through an auth-server connection pool shared by all clients, exposing connection-bound NTLM or Negotiate authentication. An unauthenticated attacker can reuse another user's authenticated connection, receiving the victim's identity via authResponseHeaders to access backends as that user. | |
| Title | Traefik before 2.11.60 and 3.7.16 ForwardAuth NTLM/Negotiate Identity Leak | |
| First Time appeared |
Traefik
Traefik traefik |
|
| Weaknesses | CWE-488 | |
| CPEs | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Traefik
Traefik traefik |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-04T15:33:28.106Z
Reserved: 2026-11-04T12:48:39.813Z
Link: CVE-2026-121966
No data.
Status : Awaiting Analysis
Published: 2026-11-04T16:17:50.107
Modified: 2026-11-04T16:17:50.303
Link: CVE-2026-121966
No data.
OpenCVE Enrichment
No data.