{"id":"CVE-2021-48011","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.","modified":"2026-10-15T02:45:06.930564009Z","published":"2026-10-12T21:17:05.903Z","database_specific":{"unresolved_ranges":[{"source":"DESCRIPTION","extracted_events":[{"introduced":"1.0.0"},{"fixed":"4.0.2"},{"fixed":"path.join"}]}]},"references":[{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/servor-1.0.0-through-4.0.2-unauthenticated-path-traversal-via-url-encoded-dot-segments"},{"type":"FIX","url":"https://github.com/lukejacksonn/servor/commit/ec7d824ea6903c0fb97a452045bbb8335198cbab"},{"type":"FIX","url":"https://github.com/lukejacksonn/servor/pull/70"},{"type":"PACKAGE","url":"https://github.com/lukejacksonn/servor"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/lukejacksonn/servor","events":[{"introduced":"0"},{"fixed":"ec7d824ea6903c0fb97a452045bbb8335198cbab"}],"database_specific":{"source":"REFERENCES"}}],"versions":["3.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-48011.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}