{"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": "2026-08-21T20:31:38.124Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"product": "runtipi", "vendor": "runtipi", "versions": [{"status": "affected", "version": "< 4.10.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-55168", "lastModified": "2026-08-21T21:17:00.410", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 1.2, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-21T21:17:00.410", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/runtipi/runtipi/commit/df529a211b05f3a0007b209b6c337f8c1942619c"}, {"source": "security-advisories@github.com", "url": "https://github.com/runtipi/runtipi/pull/2606"}, {"source": "security-advisories@github.com", "url": "https://github.com/runtipi/runtipi/releases/tag/v4.10.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/runtipi/runtipi/security/advisories/GHSA-wcrf-g9p9-2wg7"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}, {"lang": "en", "value": "CWE-61"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.10.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "runtipi", "source": "cna", "vendor": "runtipi"}, "product": "runtipi", "vendor": "runtipi"}], "created": "2026-08-21T21:30:17.392690+00:00", "updated": "2026-08-21T21:30:17.392732+00:00", "vendors": ["runtipi", "runtipi$PRODUCT$runtipi"]}