{"id":"CVE-2026-41235","summary":"Froxlor has an authorization bypass in FTP shell assignment via missing server-side `available_shells` enforcement","details":"Froxlor is open source server administration software. Version 2.3.6 lets administrators configure `system.available_shells` as the approved shell list that customers may assign to FTP users. However, the server-side FTP account handlers do not enforce that whitelist when processing add or edit requests. As a result, an authenticated customer with shell delegation enabled can submit an arbitrary shell such as `/bin/bash` even when the panel UI only offers more restricted choices. In deployments that use the default `nssextrausers` integration, the attacker-controlled shell is then propagated into the system account database, leading to real host shell access. Version 2.3.7 fixes the issue.","aliases":["GHSA-gcv3-5v9q-fmhh"],"modified":"2026-08-07T11:51:03.273789244Z","published":"2026-06-04T17:50:09.899Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41235.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-863"]},"references":[{"type":"WEB","url":"https://github.com/froxlor/froxlor/releases/tag/2.3.7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41235.json"},{"type":"ADVISORY","url":"https://github.com/froxlor/froxlor/security/advisories/GHSA-gcv3-5v9q-fmhh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41235"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/froxlor/froxlor","events":[{"introduced":"d32aa3567c8eb033bbc8667bfca2969f5cdb199f"},{"fixed":"070e537744f20d30743a22e82f783e81893d7e54"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"= 2.3.6"},{"last_affected":"= 2.3.6"}]}}],"versions":["= 2.3.6","2.3.6"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41235.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P"}]}