CVE-2026-114640
Traefik from v3.7.0 before v3.7.14 contains an authentication bypass vulnerability in its…
- Risk score
- 69/100
- CVSS
- 8.7 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 22 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Traefik versions 3.7.0 to 3.7.14 contain an authentication bypass vulnerability in its Kubernetes Ingress-NGINX provider. An attacker can impersonate mTLS identities by sending specific headers.
- Affected
- {'products': ['Traefik'], 'packages': [], 'versions': ['3.7.0', '3.7.1', '3.7.2', '3.7.3', '3.7.4', '3.7.5', '3.7.6', '3.7.7', '3.7.8', '3.7.9', '3.7.10', '3.7.11', '3.7.12', '3.7.13', '3.7.14']}
- Fix
- Upgrade to version 3.7.14 or later
- Exploitation
- No known exploitation
Not confirmed. 3.7.1, 3.7.2, 3.7.3, 3.7.4, 3.7.5, 3.7.6, 3.7.7, 3.7.8 isn't in the advisory. Check the vendor's advisory before acting on this.
Why it is Amber
- CVSS 8.7 high
- Remotely exploitable without logging in
- On your watchlist: kubernetes, nginx
References
Original description
Traefik from v3.7.0 before v3.7.14 contains an authentication bypass vulnerability in its Kubernetes Ingress-NGINX provider that forwards client-supplied Ssl-Client-* headers on the plaintext HTTP router. When ssl-redirect is disabled alongside auth-tls-pass-certificate-to-upstream, unauthenticated attackers can send Ssl-Client-Verify: SUCCESS with a chosen certificate subject and issuer to impersonate mTLS identities.
Last activity 22 Oct 2026. Patch Forecast updates every hour.