{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-121546","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-03T14:46:13.237Z","datePublished":"2026-11-03T15:17:06.673Z","dateUpdated":"2026-11-03T15:17:06.673Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-03T15:17:06.673Z"},"datePublic":"2026-10-28T00:00:00.000Z","title":"ruTorrent before 5.3.20 Path Traversal via datadir Plugin Symlink Following","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Link Resolution Before File Access ('Link Following')","cweId":"CWE-59","type":"CWE"}]}],"affected":[{"vendor":"Novik","product":"ruTorrent","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"5.3.20","versionType":"semver","status":"affected"}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"LOW","baseScore":5.9,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/Novik/ruTorrent/issues/3474","tags":["issue-tracking"],"name":"GitHub Issue #3474"},{"url":"https://github.com/Novik/ruTorrent","tags":["product"]},{"url":"https://github.com/Novik/ruTorrent/commit/2059ff12464b2ce14fd0f53df8d6b19fb6b8a5eb","tags":["patch"],"name":"Fix commit"},{"url":"https://github.com/Novik/ruTorrent/blob/v5.3.19/plugins/datadir/action.php#L60","tags":["technical-description"]},{"url":"https://github.com/Novik/ruTorrent/blob/v5.3.19/php/settings.php#L526-L541","tags":["technical-description"]},{"name":"VulnCheck Advisory: ruTorrent before 5.3.20 Path Traversal via datadir Plugin Symlink Following","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/rutorrent-before-5.3.20-path-traversal-via-datadir-plugin-symlink-following"}],"credits":[{"lang":"en","value":"George Chen","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}