CVE-2025-66490Medium· 6.5▾ SunlitTraefik is an HTTP reverse proxy and load balancer. For versions prior to 2.11.32 and 2.11.31 through 3.6.2, requests using PathPrefix, Path or PathRegex matchers can bypass path normalization. When Traefik uses path-based routing, reque…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 14.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.4%
Traefik is an HTTP reverse proxy and load balancer. For versions prior to 2.11.32 and 2.11.31 through 3.6.2, requests using PathPrefix, Path or PathRegex matchers can bypass path normalization. When Traefik uses path-based routing, requests containing URL-encoded restricted characters (/, , Null, ;, ?, #) can bypass the middleware chain and reach unintended backends. For example, a request to http://mydomain.example.com/admin%2F could reach service-a without triggering my-security-middleware, bypassing security controls for the /admin/ path. This issue is fixed in versions 2.11.32 and 3.6.3.
traefik < 2.11.32traefik >= 3.0.0, < 3.6.3Upgrade past the affected range:
traefik 3.6.3Connected by shared product, vendor, weakness, or advisory.
CVE-2026-114656High· 7.5Traefik before 2.11.58 and 3.7.13 mTLS Bypass via Negated Host Matcher
CVE-2026-88004High· 7.4Traefik is an open source HTTP reverse proxy and load balancer
CVE-2026-114639High· 8.7Traefik before 2.11.58 and 3.7.14 Authentication Bypass via Negotiate Connection Pool
CVE-2026-114635High· 8.7Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme
CVE-2026-114636High· 8.7Traefik v3.7.13 Authentication Bypass via ssl-passthrough Ingress HTTP Router
CVE-2026-114640High· 8.7Traefik v3.7.0 before v3.7.14 mTLS Header Spoofing via Ingress-NGINX HTTP Router