CVE-2026-27587
- Source
- https://cve.org/CVERecord?id=CVE-2026-27587
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-27587.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-27587
- Aliases
- Downstream
- Related
- Published
- 2026-02-24T16:26:40.222Z
- Modified
- 2026-05-18T05:58:40.913155477Z
- Severity
-
- 7.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
- Summary
- Caddy: MatchPath %xx (escaped-path) branch skips case normalization, enabling path-based route/auth bypass
- Details
-
Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's HTTP
pathrequest 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. - Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27587.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-178" ] }- References