{"id":"CVE-2026-41231","state":"PUBLISHED","title":"Froxlor has Incomplete Symlink Validation in DataDump.add() that Allows Arbitrary Directory Ownership Takeover via Cron","description":"Froxlor is open source server administration software. Prior to version 2.3.6, `DataDump.add()` constructs the export destination path from user-supplied input without passing the `$fixed_homedir` parameter to `FileDir::makeCorrectDir()`, bypassing the symlink validation that was added to all other customer-facing path operations (likely as the fix for CVE-2023-6069). When the ExportCron runs as root, it executes `chown -R` on the resolved symlink target, allowing a customer to take ownership of arbitrary directories on the system. Version 2.3.6 contains an updated fix.","publishedAt":"2026-04-23T03:52:42.587Z","updatedAt":"2026-04-23T16:23:03.549Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["froxlor froxlor"],"affected":[{"vendor":"froxlor","product":"froxlor","versions":[{"version":"< 2.3.6","status":"affected"}]}],"references":["https://github.com/froxlor/froxlor/security/advisories/GHSA-75h4-c557-j89r","https://github.com/froxlor/froxlor/commit/2987b0e8806ef12b532410050ad76d13d673a87d","https://github.com/froxlor/froxlor/releases/tag/2.3.6"],"weaknesses":["CWE-59"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/41xxx/CVE-2026-41231.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41231","state":"PUBLISHED","datePublished":"2026-04-23T03:52:42.587Z","dateUpdated":"2026-04-23T16:23:03.549Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-18T03:47:03.134Z"},"containers":{"cna":{"title":"Froxlor has Incomplete Symlink Validation in DataDump.add() that Allows Arbitrary Directory Ownership Takeover via Cron","descriptions":[{"lang":"en","value":"Froxlor is open source server administration software. Prior to version 2.3.6, `DataDump.add()` constructs the export destination path from user-supplied input without passing the `$fixed_homedir` parameter to `FileDir::makeCorrectDir()`, bypassing the symlink validation that was added to all other customer-facing path operations (likely as the fix for CVE-2023-6069). When the ExportCron runs as root, it executes `chown -R` on the resolved symlink target, allowing a customer to take ownership of arbitrary directories on the system. Version 2.3.6 contains an updated fix."}],"affected":[{"vendor":"froxlor","product":"froxlor","versions":[{"version":"< 2.3.6","status":"affected"}]}],"references":[{"url":"https://github.com/froxlor/froxlor/security/advisories/GHSA-75h4-c557-j89r","name":"https://github.com/froxlor/froxlor/security/advisories/GHSA-75h4-c557-j89r","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/froxlor/froxlor/commit/2987b0e8806ef12b532410050ad76d13d673a87d","name":"https://github.com/froxlor/froxlor/commit/2987b0e8806ef12b532410050ad76d13d673a87d","tags":["x_refsource_MISC"]},{"url":"https://github.com/froxlor/froxlor/releases/tag/2.3.6","name":"https://github.com/froxlor/froxlor/releases/tag/2.3.6","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-59","lang":"en","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-23T03:52:42.587Z"},"source":{"advisory":"GHSA-75h4-c557-j89r","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/froxlor/froxlor/security/advisories/GHSA-75h4-c557-j89r","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-23T14:48:21.532406Z","id":"CVE-2026-41231","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-23T16:23:03.549Z"}}]}}}