{"id":"CVE-2026-45139","summary":"CI4MS Fileeditor allows deletion and rename of critical application files due to missing extension allowlist on destructive operations","details":"CI4MS is a CodeIgniter 4-based content management system skeleton. Prior to version 0.31.9.0, the Fileeditor module enforces an extension allowlist (`['css','js','html','txt','json','sql','md']`) on content-write operations (`saveFile`, `createFile`), but two destructive endpoints — `deleteFileOrFolder` and `renameFile` — never validate the extension of the *source* path. A backend user with file-editor permissions can therefore unlink or rename any file inside the project root that is not explicitly listed in the small `$hiddenItems` blocklist. Critical framework files such as `app/Config/Routes.php`, `app/Config/App.php`, `app/Config/Database.php`, `app/Config/Filters.php`, `public/index.php`, and `public/.htaccess` all live outside that blocklist and can be destroyed, producing a persistent denial of service that requires filesystem-level redeployment to recover. Version 0.31.9.0 patches the issue.","aliases":["GHSA-245j-xjvr-xvm5"],"modified":"2026-08-07T11:51:11.351849911Z","published":"2026-07-20T13:58:39.800Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45139.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-73"]},"references":[{"type":"WEB","url":"https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.9.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45139.json"},{"type":"ADVISORY","url":"https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-245j-xjvr-xvm5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45139"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ci4-cms-erp/ci4ms","events":[{"introduced":"0"},{"fixed":"e1aad282cf9ae5395bdce7c7f75f8a9803cee75b"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.31.9.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["0.31.8.0","0.31.7.0","0.31.6.0","0.31.5.0","0.31.4.0","0.31.3.0","0.31.2.0","0.31.1.0","0.31.0.0","0.28.6.0","0.28.5.0","0.28.4.0","0.28.3.0","0.28.0.0","0.27.0.0","0.26.3.4","0.26.3.3","0.26.3.2","0.26.3.1","0.26.3.0","0.26.2.0","0.26.1.0","0.26.0.0","0.25.3.0","0.25.2.0","0.25.1.0","0.25.0.43","0.25.0.39","0.25.0.30","0.25.0.2","0.25.0.1","0.25.0.0","0.24.0.60","0.24.0.45","0.24.0.42","0.24.0.27","0.24.0.20","0.24.0.19","0.24.0.18","0.24.0.16","0.24.0.0","0.23.1.0","0.23.0.0","0.21.3.7","0.21.3.6","0.21.3.5","0.21.3.4","0.21.3.3","0.21.3.2","0.21.3.1","0.21.3","0.21.2","0.21.1","0.21.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45139.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H"}]}