CVE-2026-114635
Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme
- State
- Published
- Severity
- 7.0 High
- Published
- Oct 22, 2026
- Updated
- Oct 22, 2026
- Reserved
- Oct 21, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.0 High | 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 | VulnCheck |
| 3.1 | 8.7 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-288 Authentication Bypass Using an Alternate Path or Channel
Affected Products
| Product | Versions |
|---|---|
traefiktraefik |
|
traefiktraefik |
|
References
- GitHub Security Advisory (GHSA-fh26-gfpp-7xxx)vendor-advisory
- VulnCheck Advisory: Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Schemethird-party-advisory
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