{"id":"CVE-2026-52844","revision":"42e23ad955fc4f3e876d3c2a073bcacd","records":[{"revision":"42e23ad955fc4f3e876d3c2a073bcacd","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-52844","aliases":[],"title":"Caddy: Windows `file_server` path authorization bypass via encoded backslash","description":"Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, on Windows, Caddy path matchers treat /private\\secret.txt as outside /private/*, but file_server later resolves the same request path as private\\secret.txt on disk. An unauthenticated remote client can bypass Caddy path-scoped auth/deny routes protecting /private/*. This vulnerability is fixed in 2.11.4.","state":0,"publishedAt":"2026-06-23T17:50:42.386+00:00","modifiedAt":"2026-06-23T20:06:12.019+00:00","affected":[{"ecosystem":"Vendor product","name":"caddy","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"caddyserver\",\n                    \"product\": \"caddy\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.11.4\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/caddyserver/caddy/security/advisories/GHSA-qrp7-cvwr-j2c6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-52844","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-52844","identifiers":["CVE-2026-52844"]},"retained":false,"historicalAffected":[]}],"coverage":[]}