{"affected":[{"defaultStatus":"unaffected","product":"ruTorrent","source":"CNA: VulnCheck","vendor":"Novik","versions":[{"lessThan":"5.3.20","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-121546","cwes":["CWE-59"],"description":"ruTorrent before 5.3.20 contains a path traversal vulnerability in the datadir plugin that allows authenticated users to escape the topDirectory jail because correctDirectory() does not resolve symbolic links. Attackers can submit a datadir path through a symlink under their top directory to create directories and move torrent data to locations writable by the web server or rtorrent.","epss":{"date":"2026-11-09","percentile":0.34693,"score":0.00402},"exploits":[],"kev":null,"metrics":[{"score":6,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0"},{"score":5.9,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","version":"3.1"},{"score":6,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/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","version":"4.0"},{"score":5.9,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","version":"3.1"}],"modifiedAt":1794236917962,"publishedAt":1793719026673,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/Novik/ruTorrent/issues/3474"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/Novik/ruTorrent"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/Novik/ruTorrent/commit/2059ff12464b2ce14fd0f53df8d6b19fb6b8a5eb"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/Novik/ruTorrent/blob/v5.3.19/plugins/datadir/action.php#L60"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/Novik/ruTorrent/blob/v5.3.19/php/settings.php#L526-L541"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/rutorrent-before-5.3.20-path-traversal-via-datadir-plugin-symlink-following"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/Novik/ruTorrent"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/Novik/ruTorrent/blob/v5.3.19/php/settings.php#L526-L541"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/Novik/ruTorrent/blob/v5.3.19/plugins/datadir/action.php#L60"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/Novik/ruTorrent/commit/2059ff12464b2ce14fd0f53df8d6b19fb6b8a5eb"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/Novik/ruTorrent/issues/3474"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/rutorrent-before-5.3.20-path-traversal-via-datadir-plugin-symlink-following"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/Novik/ruTorrent/commit/2059ff12464b2ce14fd0f53df8d6b19fb6b8a5eb"}],"revision":"0146558d6840e0a26839e1a9efdf8981a84d43f389186554d0ca5849d0682998","sources":[{"modifiedAt":1794236917962,"name":"CNA: VulnCheck","retrievedAt":1794240568237,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121546"},{"modifiedAt":1793723449290,"name":"NVD","retrievedAt":1793730101300,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121546"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794240591229,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-121546"}],"ssvc":{"assessedAt":1794236891477,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"ruTorrent before 5.3.20 Path Traversal via datadir Plugin Symlink Following","updatedAt":1794240591229}