{"id":"CVE-2026-41236","state":"PUBLISHED","title":"Froxlor has privilege escalation in SSH key synchronization via symlinked `authorized_keys` path","description":"Froxlor is open source server administration software. Version 2.3.6 contains a symlink-following flaw in the root-owned SSH key synchronization path used for customer FTP users. The provisioning code appends public keys to `~/.ssh/authorized_keys` under a customer-controlled home directory without verifying that the target path is not a symbolic link. If an attacker controls a shell-enabled customer account and can modify files inside the assigned home directory, the attacker can replace `~/.ssh/authorized_keys` with a symlink to `/root/.ssh/authorized_keys`. When Froxlor's privileged cron task later synchronizes SSH keys, it appends the attacker-supplied key into root's authorized key file, resulting in root SSH access. Version 2.3.7 contains a patch.","publishedAt":"2026-06-04T17:52:10.066Z","updatedAt":"2026-06-08T14:32:22.356Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/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-mq5v-pxpm-8jw2","https://github.com/froxlor/froxlor/releases/tag/2.3.7"],"weaknesses":["CWE-59"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/41xxx/CVE-2026-41236.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41236","state":"PUBLISHED","datePublished":"2026-06-04T17:52:10.066Z","dateUpdated":"2026-06-08T14:32:22.356Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-18T03:47:03.134Z"},"containers":{"cna":{"title":"Froxlor has privilege escalation in SSH key synchronization via symlinked `authorized_keys` path","descriptions":[{"lang":"en","value":"Froxlor is open source server administration software. Version 2.3.6 contains a symlink-following flaw in the root-owned SSH key synchronization path used for customer FTP users. The provisioning code appends public keys to `~/.ssh/authorized_keys` under a customer-controlled home directory without verifying that the target path is not a symbolic link. If an attacker controls a shell-enabled customer account and can modify files inside the assigned home directory, the attacker can replace `~/.ssh/authorized_keys` with a symlink to `/root/.ssh/authorized_keys`. When Froxlor's privileged cron task later synchronizes SSH keys, it appends the attacker-supplied key into root's authorized key file, resulting in root SSH access. Version 2.3.7 contains a patch."}],"affected":[{"vendor":"froxlor","product":"froxlor","versions":[{"version":"= 2.3.6","status":"affected"}]}],"references":[{"url":"https://github.com/froxlor/froxlor/security/advisories/GHSA-mq5v-pxpm-8jw2","name":"https://github.com/froxlor/froxlor/security/advisories/GHSA-mq5v-pxpm-8jw2","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/froxlor/froxlor/releases/tag/2.3.7","name":"https://github.com/froxlor/froxlor/releases/tag/2.3.7","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/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":"2026-06-04T17:52:10.066Z"},"source":{"advisory":"GHSA-mq5v-pxpm-8jw2","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/froxlor/froxlor/security/advisories/GHSA-mq5v-pxpm-8jw2","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-08T14:31:23.498499Z","id":"CVE-2026-41236","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":"2026-06-08T14:32:22.356Z"}}]}}}