Original description
Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header over TLS on Go 1.27 builds to reach routers requiring client certificates without presenting one.
Affected software
- Traefik ≥ 3.0.0 < 3.7.14< 2.11.58 Fixed in: 3.7.14, 2.11.58 exact match
Details
- Published
- 2026-10-22
- Last modified
- 2026-11-05
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N- CWE
- CWE-288
References
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