Security Advisory

CVE-2026-27587

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-02-24 16:26:40

Last updated 2026-02-27 20:48:09

Assigner GitHub_M

State PUBLISHED

Description

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddys HTTP `path` request matcher is intended to be case-insensitive, but when the match pattern contains percent-escape sequences (`%xx`) it compares against the requests escaped path without lowercasing. An attacker can bypass path-based routing and any access controls attached to that route by changing the casing of the request path. Version 2.11.1 contains a fix for the issue.

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