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    CVE-2026-114635

    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.

    Published:Oct 22, 2026
    Last Modified:Oct 22, 2026
    EPS:Oct 22, 2026
    EPSS Score:
    CVSS Score:8.7

    Affected Products

    Vendor
    Traefik
    Product
    Traefik

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-127 Directory Indexing
    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

    CVE-2026-121966 (CVSS 7) — Traefik 2.x before 2.11.60 and 3.x before 3.7.16 sends ForwardAuth subrequests (and, in 3.7, Ingress NGINX aut…
    CVE-2026-119574 (CVSS 8.2) — Traefik from 3.2.0 before 3.7.15 contains a data race in the experimental FastProxy that allows unauthenticate…
    CVE-2026-119573 (CVSS 2.1) — Traefik 3.7.11 before 3.7.15 contains an authorization bypass in the Kubernetes Ingress NGINX provider that sk…
    CVE-2026-119572 (CVSS 7) — Traefik from 3.7.0-ea.1 before 3.7.15 contains an authentication bypass vulnerability in the Kubernetes Ingres…
    CVE-2026-114656 (CVSS 6.9) — Traefik before 2.11.58 and 3.7.13 contains an authentication bypass vulnerability that allows unauthenticated …
    CVE-2026-114642 (CVSS 7) — Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 stores its NTLM/Kerberos backend round tripper in a clie…
    CVE-2026-114641 (CVSS 6.3) — Traefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and Kerberos (Negotiate)…
    CVE-2026-114640 (CVSS 7) — Traefik from v3.7.0 before v3.7.14 contains an authentication bypass vulnerability in its Kubernetes Ingress-N…
    CVE-2026-114639 (CVSS 7) — Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 contains an authentication bypass because a first reques…
    CVE-2026-114638 (CVSS 7) — Traefik v3.7.0 before v3.7.14 contains an improper authentication vulnerability in the Kubernetes Ingress NGIN…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High