github.com/traefik/traefik/v3 vulnerabilities

Browse known CVEs and advisories by package and ecosystem. Severity tells you the worst case. What determines real risk is whether the vulnerable code actually runs in your applications.

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CVE-IDSeverityPackage summary
CVE-2026-40912Highgithub.com/traefik/traefik/v3: Traefik has an StripPrefixRegex Middleware Authorization Bypass via Path/RawPath DesyncCVE-2026-39858Highgithub.com/traefik/traefik/v3: Traefik: Pre-authentication decision bypass due to forwarded alias spoofingCVE-2026-35051Highgithub.com/traefik/traefik/v3: Traefik's ForwardAuth trustForwardHeader=false allows spoofed X-Forwarded-Prefix to bypass authenticationGHSA-46WH-3698-F2CXHighgithub.com/traefik/traefik/v2: Traefik: Deny Rule Bypass via Unauthenticated Malicious gRPC Requests in gRPC-Go Dependency (CVE-2026-33186)CVE-2026-33433Mediumgithub.com/traefik/traefik/v2: Traefik Vulnerable to BasicAuth/DigestAuth Identity Spoofing via Non-Canonical headerFieldCVE-2026-32695Mediumgithub.com/traefik/traefik/v3: Traefik has Knative Ingress Rule Injection that Allows Host Restriction BypassCVE-2026-32595Mediumgithub.com/traefik/traefik: Traefik Affected by BasicAuth Middleware Timing Attack Allows Username EnumerationCVE-2026-32305Highgithub.com/traefik/traefik/v3: Traefik has a Potential mTLS Bypass via Fragmented TLS ClientHello Causing Pre-SNI Sniff Fallback to Default Non-mTLS TLS ConfigGHSA-4HJQ-9H5C-252JHighgithub.com/traefik/traefik/v2: Traefik: HTTP/2 frames can cause a running server to panicCVE-2026-29777Mediumgithub.com/traefik/traefik/v3: Traefik: kubernetes gateway rule injection via unescaped backticks in HTTPRoute match valuesCVE-2026-29054Highgithub.com/traefik/traefik/v2: traefik CVE-2024-45410 fix bypass: lowercase `Connection` tokens can delete traefik-managed forwarded identity headers (for example,…CVE-2026-26999Highgithub.com/traefik/traefik/v2: Traefik: tcp router clears read deadlines before tls forwarding, enabling stalled handshakes (Slowloris DOS)CVE-2026-26998Mediumgithub.com/traefik/traefik/v2: Traefik has unbounded io.ReadAll on auth server response body that causes OOM DOSGHSA-GV8R-9RW9-9697Highgithub.com/traefik/traefik: Traefik affected by TLS ClientAuth Bypass on HTTP/3CVE-2026-25949Highgithub.com/traefik/traefik/v3: Traefik: TCP readTimeout bypass via STARTTLS on PostgresCVE-2026-22045Mediumgithub.com/traefik/traefik/v3: Traefik's ACME TLS-ALPN fast path lacks timeouts and close on handshake stallCVE-2025-66491Mediumgithub.com/traefik/traefik/v3: Traefik Inverted TLS Verification Logic in ingress-nginx ProviderCVE-2025-66490Mediumgithub.com/traefik/traefik: Path Normalization Bypass in Traefik Router + Middleware RulesCVE-2025-54386Highgithub.com/traefik/traefik/v2: Traefik Client Plugin's Path Traversal Vulnerability Allows Arbitrary File Overwrite and Remote Code ExecutionCVE-2025-47952Lowgithub.com/traefik/traefik/v3: Traefik allows path traversal using url encodingCVE-2025-32431Highgithub.com/traefik/traefik: Traefik has a possible vulnerability with its path matchersGHSA-5423-JCJM-2GPVCriticalgithub.com/traefik/traefik/v2: Traefik affected by Go HTTP Request Smuggling VulnerabilityGHSA-3WQC-MWFX-672PHighgithub.com/traefik/traefik/v3: Traefik affected by Go oauth2/jws Improper Validation of Syntactic Correctness of Input vulnerabilityGHSA-HXR6-2P24-HF98Mediumgithub.com/traefik/traefik/v2: Traefik affected by CVE-2024-53259CVE-2024-52003Mediumgithub.com/traefik/traefik/v2: Traefik's X-Forwarded-Prefix Header still allows for Open Redirect

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