{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55168","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-16T15:13:28.166Z","datePublished":"2026-08-21T20:31:38.124Z","dateUpdated":"2026-08-25T17:01:52.501Z"},"containers":{"cna":{"title":"Runtipi: Authenticated arbitrary file write via backup restore symlink planting","problemTypes":[{"descriptions":[{"cweId":"CWE-59","lang":"en","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-61","lang":"en","description":"CWE-61: UNIX Symbolic Link (Symlink) Following","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/runtipi/runtipi/security/advisories/GHSA-wcrf-g9p9-2wg7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/runtipi/runtipi/security/advisories/GHSA-wcrf-g9p9-2wg7"},{"name":"https://github.com/runtipi/runtipi/pull/2606","tags":["x_refsource_MISC"],"url":"https://github.com/runtipi/runtipi/pull/2606"},{"name":"https://github.com/runtipi/runtipi/commit/df529a211b05f3a0007b209b6c337f8c1942619c","tags":["x_refsource_MISC"],"url":"https://github.com/runtipi/runtipi/commit/df529a211b05f3a0007b209b6c337f8c1942619c"},{"name":"https://github.com/runtipi/runtipi/releases/tag/v4.10.1","tags":["x_refsource_MISC"],"url":"https://github.com/runtipi/runtipi/releases/tag/v4.10.1"}],"affected":[{"vendor":"runtipi","product":"runtipi","versions":[{"version":"< 4.10.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-08-21T20:31:38.124Z"},"descriptions":[{"lang":"en","value":"Runtipi is a personal homeserver orchestrator. In 4.10.0 and earlier, Runtipi accepts symbolic links from an attacker-controlled backup archive and copies them into live application paths during the backup restore flow. An authenticated attacker can plant user-config/app.env as a symlink to an arbitrary reachable path and then send PUT /api/user-config/demoapp3:_user with attacker-controlled appEnv content. FilesystemService.writeTextFile() follows the planted link, allowing content to be written outside the intended restore and user-config directory boundary with Runtipi process permissions. This issue is fixed in version 4.10.1."}],"source":{"advisory":"GHSA-wcrf-g9p9-2wg7","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/runtipi/runtipi/security/advisories/GHSA-wcrf-g9p9-2wg7","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-25T17:00:46.475021Z","id":"CVE-2026-55168","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-25T17:01:52.501Z"}}]}}