{"id":"ALPINE-CVE-2026-27587","details":"Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's HTTP `path` request matcher is intended to be case-insensitive, but when the match pattern contains percent-escape sequences (`%xx`) it compares against the request's 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.","modified":"2026-11-03T06:33:02.006246894Z","published":"2026-02-24T17:29:03.953Z","upstream":["CVE-2026-27587"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2026-27587"}],"affected":[{"package":{"name":"caddy","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/caddy?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.10.2"},{"fixed":"2.11.2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-27587.json"}},{"package":{"name":"caddy","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/caddy?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.10.2"},{"fixed":"2.11.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-27587.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}