{"id":"CVE-2021-48011","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-48011","summary":"Servor 1.0.0 through 4.0.2 contains a path traversal vulnerability that allows unauthenticated remote attackers to escape the served root by sending URL-encoded dot segments. Attackers…","details":"Servor 1.0.0 through 4.0.2 contains a path traversal vulnerability that allows unauthenticated remote attackers to escape the served root by sending URL-encoded dot segments. Attackers can send %2e%2e/ sequences, which decodeURI() decodes before path.join() in serveStaticFile and serveDirectoryListing, to read arbitrary files and list directories outside the root.","published":"2026-10-12T21:17:05.903","modified":"2026-10-13T16:17:06.873","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/lukejacksonn/servor/commit/ec7d824ea6903c0fb97a452045bbb8335198cbab","label":"lukejacksonn/servor@ec7d824"},"references":[{"type":"WEB","url":"https://github.com/lukejacksonn/servor"},{"type":"WEB","url":"https://github.com/lukejacksonn/servor/commit/ec7d824ea6903c0fb97a452045bbb8335198cbab"},{"type":"WEB","url":"https://github.com/lukejacksonn/servor/pull/70"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/servor-1.0.0-through-4.0.2-unauthenticated-path-traversal-via-url-encoded-dot-segments"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-10-13T16:17:06.873"}}