InfraGuard

Traefik 3.7 vulnerabilities

55 known CVEs affect the 3.7 line of Traefik.

9.3 max CVSS

Fixed in

3.7.13.7.33.7.53.7.63.7.73.7.83.7.93.7.103.7.113.7.123.7.133.7.143.7.153.7.16
Check your versiontraefik version

CVEs affecting 3.7

CVE Title CVSS Exploited EPSS Published
CVE-2026-85595 Traefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuth 9.3 — 2026-09-04
CVE-2026-88877 Traefik v3.7.0 Authentication Bypass via from-to-www-redirect 9.3 — 2026-09-10
CVE-2026-88007 Traefik HTTP/3 Backend NTLM Connection Reuse 9.1 — 2026-09-10
CVE-2026-88009 Traefik: Rootless HTTP/1 request-target routes as "/" but is forwarded verbatim, bypassing path-scoped routing... 8.8 — 2026-09-11
CVE-2026-85596 Traefik v3.7 Authentication Bypass via TLS Option Conflict 8.2 — 2026-09-04
CVE-2026-85597 Traefik before v2.11.55 and v3.0.0 through v3.7.10 mTLS Bypass via TLS Option Conflict 8.2 — 2026-09-04
CVE-2026-119574 Traefik 3.2.0 before 3.7.15 FastProxy Data Race Denial of Service 8.2 — 2026-10-30
CVE-2026-32305 Traefik mTLS bypass via fragmented ClientHello SNI extraction failure 7.8 — 2026-03-20
CVE-2026-35051 Traefik: ForwardAuth trustForwardHeader=false allows spoofed X-Forwarded-Prefix to bypass auth 7.8 — 2026-05-01
CVE-2026-39858 Traefik: Forwarded alias spoofing top pre-auth decision bypass 7.8 — 2026-05-01
CVE-2026-40912 Traefik: StripPrefixRegex auth bypass via Path/RawPath desync 7.8 — 2026-05-01
CVE-2026-48020 Traefik StripPrefix Route-Level Auth Bypass via Path Normalization 7.8 — 2026-06-24
CVE-2026-48491 Traefik: SNICheck ignores wildcard TLSOptions mappings, allowing domain-fronted mTLS bypass 7.8 — 2026-06-24
CVE-2026-53622 Traefik: HTTP/3 mTLS bypass via exact SNI TLSOptions lookup for wildcard and mixed-case hosts 7.8 — 2026-06-24
CVE-2026-54763 Traefik: headerField underscore-variant identity spoofing in BasicAuth / DigestAuth / ForwardAuth 7.8 — 2026-07-07
CVE-2026-65600 Traefik before v2.11.52 Authentication Bypass via ReplacePathRegex 7.8 — 2026-07-22
CVE-2026-67309 Traefik v3.7.0 Path Traversal via RewriteTarget Authentication Bypass 7.8 — 2026-08-01
CVE-2026-71327 Traefik: Gateway API route identity collision allows cross-namespace backend hijacking 7.6 — 2026-08-07
CVE-2026-121966 Traefik before 2.11.60 and 3.7.16 ForwardAuth NTLM/Negotiate Identity Leak 7.0 — 2026-11-05
CVE-2026-71324 Traefik: Cross-user response poisoning via proxied CONNECT on Traefik's shared backend keep-alive pool 7.0 — 2026-08-07
CVE-2026-85594 Traefik v3.7.1 crossProviderNamespaces Bypass via Service Middleware 7.0 — 2026-09-04
CVE-2026-88004 Traefik entrypoint header-name sanitization bypassed via request trailers 7.0 — 2026-09-10
CVE-2026-88008 Traefik: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') and Incorrect Author... 7.0 — 2026-09-10
CVE-2026-114635 Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme 7.0 — 2026-10-22
CVE-2026-114636 Traefik v3.7.13 Authentication Bypass via ssl-passthrough Ingress HTTP Router 7.0 — 2026-10-22
CVE-2026-114637 Traefik v3.2.0 before v3.7.14 FastProxy NTLM/Negotiate Connection Pool Identity Leak 7.0 — 2026-10-22
CVE-2026-114638 Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision 7.0 — 2026-10-22
CVE-2026-114639 Traefik before 2.11.58 and 3.7.14 Authentication Bypass via Negotiate Connection Pool 7.0 — 2026-10-22
CVE-2026-114640 Traefik v3.7.0 before v3.7.14 mTLS Header Spoofing via Ingress-NGINX HTTP Router 7.0 — 2026-10-22
CVE-2026-114642 Traefik before 2.11.58 and 3.7.14 TLS Config Bypass via NTLM/Kerberos Round Tripper 7.0 — 2026-10-22
CVE-2026-119572 Traefik 3.7.0-ea.1 before 3.7.15 mTLS Bypass via Ingress NGINX Provider 7.0 — 2026-10-30
CVE-2026-41181 Traefik: Errors middleware forwards Authorization and Cookie headers to separate error page service 6.9 — 2026-05-16
CVE-2026-54764 ForwardAuth middleware leaks X-Forwarded-Port spoofing via untrusted X-Forwarded-Proto when trustForwardHeader... 6.9 — 2026-07-07
CVE-2026-88878 Traefik v2.8.2 through v3.6 HTTP/3 Timeout Bypass 6.9 — 2026-09-10
CVE-2026-114656 Traefik before 2.11.58 and 3.7.13 mTLS Bypass via Negated Host Matcher 6.9 — 2026-10-22
CVE-2026-44774 Traefik: Gateway API TraefikService backend accepts rest@internal, allowing unauthorized exposure of the REST... 6.4 — 2026-05-16
CVE-2026-112778 Traefik before 2.11.46, 3.6.17, and 3.7.1 Cross-Namespace Resource Reference via Kubernetes Annotations 6.4 — 2026-10-20
CVE-2026-32595 Traefik: BasicAuth Middleware Timing Attack Allows Username Enumeration 6.3 — 2026-03-20
CVE-2026-32695 Traefik has Knative Ingress Rule Injection that Allows Host Restriction Bypass 6.3 — 2026-03-27
CVE-2026-41263 Traefik: BasicAuth middleware: timing side-channel vulnerability 6.3 — 2026-05-01
CVE-2026-54765 Traefik: Gateway HTTPRoute backendRef filters can leak backend context across routes sharing a Service:port 6.3 — 2026-07-07
CVE-2026-88010 Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle 6.3 — 2026-09-23
CVE-2026-114641 Traefik before 2.11.58 and 3.7.14 Race Condition in NTLM/Kerberos Round Tripper 6.3 — 2026-10-22
CVE-2026-54761 Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose in... 6.0 — 2026-06-24
CVE-2026-54762 Traefik Kubernetes Ingress NGINX provider fails open when auth-secret resolution fails 5.9 — 2026-06-24
CVE-2026-65601 Traefik before 3.7.7 Namespace Confusion via HTTPRoute ExtensionRef 5.3 — 2026-07-22
CVE-2026-65602 Traefik before 3.6.23 IngressRouteTCP ServersTransport Namespace Bypass 5.3 — 2026-07-22
CVE-2026-88879 Traefik before v2.11.56 Identity Spoofing via Header Alias 5.3 — 2026-09-10
CVE-2026-88011 Traefik: ForwardAuth identity spoofing via dot-form header alias 5.3 — 2026-09-11
CVE-2026-88012 Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded 5.3 — 2026-09-11
CVE-2026-33433 Traefik Vulnerable to BasicAuth/DigestAuth Identity Spoofing via Non-Canonical headerField 5.1 — 2026-03-27
CVE-2026-41174 Traefik Kubernetes CRD allows unauthorized cross-namespace middleware binding 4.8 — 2026-05-01
CVE-2026-71325 Traefik: `allowCrossNamespace=false` bypass via `@kubernetescrd` TraefikService backendRef 4.8 — 2026-08-07
CVE-2026-71326 Traefik: BasicAuth singleflight key collision allows authenticated identity spoofing 2.1 — 2026-08-07
CVE-2026-119573 Traefik 3.7.11 before 3.7.15 Cross-Namespace Authorization Bypass via auth-tls-secret 2.1 — 2026-10-30

Track these versions on your own servers

InfraGuard collects installed software versions from every server and flags the ones with known vulnerabilities. Self-hosted — nothing leaves your network.

Weekly exploited-vulnerability digest

The KEV additions that matter for self-hosted servers, once a week. No other mail.

Data: CVE List (CVE® Program), NVD, CISA KEV, FIRST EPSS (see EPSS at https://www.first.org/epss), endoflife.date. Software list: awesome-selfhosted (CC BY-SA 3.0).