Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-88009

Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.57, and 3.7.13, Traefik accepts a rootless HTTP/1 request target that Go stores in URL.Opaque while leaving URL.Path empty. The rewriteRequestBuilder path evaluates routing, path sanitization, forwardAuth, encodedCharacters, and access logging against a path normalized to / but forwards URL.Opaque verbatim to the backend, allowing cross-vhost routing bypass, path-scoped authorization bypass, and access-log evasion when the backend interprets the opaque target as a path. This issue is fixed in 2.11.57 and 3.7.13.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 26.5%
CVSS Severity
CVSS v3 Score 8.2
Products affected by CVE-2026-88009


Contact Us

Shodan ® - All rights reserved