CVE-2026-114635

High

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.

SeverityHigh

CVSS8.7

Exploit probability—

Product

Traefik

PublishedOct 22, 2026

First seenOct 22, 2026

Weakness typeCWE-288CWE-288

How to fix

Update

traefik traefik2.11.58, 3.7.14 or later

Vendor advisories

github.com/traefik/traefik/security/advisories/GHSA-fh26-gfpp-7xxx

Affected products

Product	Affected versions	Fixed in
traefik traefik	v < 2.11.58, 3.0.0 ≤ v < 3.7.14	2.11.58, 3.7.14

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.