{"id":"CVE-2026-24421","aliases":["EUVD-2026-4258","GHSA-wm8h-26fv-mg7g"],"status":"published","title":"phpMyFAQ missing authorization exposes /api/setup/backup to any authenticated user","description":"phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below have flawed authorization logic which exposes the /api/setup/backup endpoint to any authenticated user despite their permissions. SetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. Non-admin users can trigger a configuration backup and retrieve its path. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP. This issue is fixed in version 4.0.17.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01744,"percentile":0.78103,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-285","CWE-862"],"published":"2026-01-23T20:17:25Z","modified":"2026-10-28T02:30:21Z","exploits":[{"source":"exploitdb","id":"EDB-52523","title":"phpMyFAQ  4.0.16 - Improper Authorization","type":"webapps","platform":"php","date":"2026-04-29","url":"https://www.exploit-db.com/exploits/52523"}],"fixes":[{"ecosystem":"Packagist","package":"phpmyfaq/phpmyfaq","fixed_in":["4.0.17"],"sources":["ghsa","osv"]},{"ecosystem":"Packagist","package":"thorsten/phpmyfaq","fixed_in":["4.0.17"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"phpmyfaq/phpmyfaq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.0.16"},{"fixed":"4.0.17"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"thorsten/phpmyfaq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.0.16"},{"fixed":"4.0.17"}]}]},{"source":"osv","ecosystem":"Packagist","package":"phpmyfaq/phpmyfaq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.17"}]}],"versions":["2.10.0-alpha","2.8.0","2.8.0-RC","2.8.0-RC2","2.8.0-RC3","2.8.0-RC4","2.8.0-alpha2","2.8.0-alpha3","2.8.0-beta","2.8.0-beta2","2.8.0-beta3","2.8.1","2.8.10","2.8.11","2.8.12","2.8.13","2.8.14","2.8.15","2.8.16","2.8.17","2.8.18","2.8.19","2.8.2","2.8.20","2.8.21","2.8.22","2.8.23","2.8.24","2.8.25","2.8.26","2.8.27","2.8.28","2.8.29","2.8.3","2.8.4","2.8.5","2.8.6","2.8.7","2.8.8","2.8.9","2.9.0","2.9.0-alpha","2.9.0-alpha2","2.9.0-alpha3","2.9.0-alpha4","2.9.0-beta","2.9.0-beta2","2.9.0-rc","2.9.0-rc2","2.9.0-rc3","2.9.0-rc4","2.9.1","2.9.10","2.9.11","2.9.12","2.9.13","2.9.2","2.9.3","2.9.4","2.9.5","2.9.6","2.9.7","2.9.8","2.9.9","3.0.0","3.0.0-RC","3.0.0-RC.2","3.0.0-alpha","3.0.0-alpha.2","3.0.0-alpha.3","3.0.0-alpha.4","3.0.0-beta","3.0.0-beta.2","3.0.0-beta.3","3.0.1","3.0.10","3.0.11","3.0.12","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.0.8","3.0.9","3.1.0","3.1.0-RC","3.1.0-alpha","3.1.0-alpha.2","3.1.0-alpha.3","3.1.0-beta","3.1.1","3.1.10","3.1.11","3.1.12","3.1.13","3.1.14","3.1.15","3.1.16","3.1.17","3.1.18","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.1.7","3.1.8","3.1.9","3.2.0","3.2.0-RC","3.2.0-RC.2","3.2.0-RC.4","3.2.0-alpha","3.2.0-beta","3.2.0-beta.2","3.2.1","3.2.10","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.2.8","3.2.9","4.0.0","4.0.0-RC","4.0.0-RC.2","4.0.0-RC.3","4.0.0-RC.4","4.0.0-RC.5","4.0.0-alpha","4.0.0-alpha.2","4.0.0-alpha.3","4.0.0-alpha.4","4.0.0-beta","4.0.0-beta.2","4.0.1","4.0.10","4.0.11","4.0.12","4.0.13","4.0.14","4.0.15","4.0.16","4.0.2","4.0.3","4.0.4","4.0.5","4.0.6","4.0.7","4.0.8","4.0.9"]},{"source":"osv","ecosystem":"Packagist","package":"thorsten/phpmyfaq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.17"}]}],"versions":["2.10.0-alpha","2.8.0","2.8.0-RC","2.8.0-RC2","2.8.0-RC3","2.8.0-RC4","2.8.0-alpha2","2.8.0-alpha3","2.8.0-beta","2.8.0-beta2","2.8.0-beta3","2.8.1","2.8.10","2.8.11","2.8.12","2.8.13","2.8.14","2.8.15","2.8.16","2.8.17","2.8.18","2.8.19","2.8.2","2.8.20","2.8.21","2.8.22","2.8.23","2.8.24","2.8.25","2.8.26","2.8.27","2.8.28","2.8.29","2.8.3","2.8.4","2.8.5","2.8.6","2.8.7","2.8.8","2.8.9","2.9.0","2.9.0-alpha","2.9.0-alpha2","2.9.0-alpha3","2.9.0-alpha4","2.9.0-beta","2.9.0-beta2","2.9.0-rc","2.9.0-rc2","2.9.0-rc3","2.9.0-rc4","2.9.1","2.9.10","2.9.11","2.9.12","2.9.13","2.9.2","2.9.3","2.9.4","2.9.5","2.9.6","2.9.7","2.9.8","2.9.9","3.0.0","3.0.0-RC","3.0.0-RC.2","3.0.0-alpha","3.0.0-alpha.2","3.0.0-alpha.3","3.0.0-alpha.4","3.0.0-beta","3.0.0-beta.2","3.0.0-beta.3","3.0.1","3.0.10","3.0.11","3.0.12","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.0.8","3.0.9","3.1.0","3.1.0-RC","3.1.0-alpha","3.1.0-alpha.2","3.1.0-alpha.3","3.1.0-beta","3.1.1","3.1.10","3.1.11","3.1.12","3.1.13","3.1.14","3.1.15","3.1.16","3.1.17","3.1.18","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.1.7","3.1.8","3.1.9","3.2.0","3.2.0-RC","3.2.0-RC.2","3.2.0-RC.4","3.2.0-alpha","3.2.0-beta","3.2.0-beta.2","3.2.1","3.2.10","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.2.8","3.2.9","4.0.0","4.0.0-RC","4.0.0-RC.2","4.0.0-RC.3","4.0.0-RC.4","4.0.0-RC.5","4.0.0-alpha","4.0.0-alpha.2","4.0.0-alpha.3","4.0.0-alpha.4","4.0.0-beta","4.0.0-beta.2","4.0.1","4.0.10","4.0.11","4.0.12","4.0.13","4.0.14","4.0.15","4.0.16","4.0.2","4.0.3","4.0.4","4.0.5","4.0.6","4.0.7","4.0.8","4.0.9"]}],"products":[{"vendor":"phpmyfaq","product":"phpmyfaq"},{"vendor":"thorsten","product":"phpmyfaq"}],"references":[{"url":"https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-wm8h-26fv-mg7g","tags":["x_refsource_CONFIRM","Exploit","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-24421","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-wm8h-26fv-mg7g"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24421.json","tags":["advisory"]},{"url":"https://github.com/thorsten/phpMyFAQ","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-24421","title":"phpMyFAQ missing authorization exposes /api/setup/backup to any authenticated user","description":"phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below have flawed authorization logic which exposes the /api/setup/backup endpoint to any authenticated user despite their permissions. SetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. Non-admin users can trigger a configuration backup and retrieve its path. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP. This issue is fixed in version 4.0.17.","status":"published","published":"2026-01-24T01:43:10.011Z","modified":"2026-01-26T16:17:14.65Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:19:50.575061Z"}],"euvd":[{"id":"EUVD-2026-4258","description":"phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below have flawed authorization logic which exposes the /api/setup/backup endpoint to any authenticated user despite their permissions. SetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. Non-admin users can trigger a configuration backup and retrieve its path. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP. This issue is fixed in version 4.0.17.","status":"published","published":"2026-01-24T01:43:10Z","modified":"2026-01-26T16:17:14Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:48:47.293439Z"}],"ghsa":[{"id":"GHSA-wm8h-26fv-mg7g","title":"phpMyFAQ: /api/setup/backup accessible to any authenticated user (authz missing)","description":"### Summary\nAuthenticated non‑admin users can call /api/setup/backup and trigger a configuration backup. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP.\n\n### Details\nSetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. This allows any logged‑in user to create a sensitive backup and retrieve its path.\n\n### PoC\nPrecondition: API enabled, any authenticated non‑admin user.\n- Log in as a non‑admin user.\n- Call backup endpoint.\n```\ncurl -c /tmp/pmf_api_cookies.txt \\\n  -H 'Content-Type: application/json' \\\n  -d '{\"username\":\"tester\",\"password\":\"Test1234!\"}' \\\n  http://192.168.40.16/phpmyfaq/api/v3.0/login\n\ncurl -i -b /tmp/pmf_api_cookies.txt \\\n  -X POST --data '4.0.16' \\\n  http://192.168.40.16/phpmyfaq/api/setup/backup\n```\n\n### Impact\nLow‑privileged users can generate sensitive backups. If the ZIP is web‑accessible (server misconfiguration), this can lead to secret exposure.","status":"published","published":"2026-01-23T20:17:25Z","modified":"2026-01-28T04:43:47Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-285","CWE-862"],"updated_at":"2026-11-02T14:39:20.563096Z"}],"nvd":[{"id":"CVE-2026-24421","description":"phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below have flawed authorization logic which exposes the /api/setup/backup endpoint to any authenticated user despite their permissions. SetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. Non-admin users can trigger a configuration backup and retrieve its path. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP. This issue is fixed in version 4.0.17.","status":"published","published":"2026-01-24T02:15:49.507Z","modified":"2026-06-17T10:23:02.817Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:04.423757Z"}],"osv":[{"id":"CVE-2026-24421","title":"phpMyFAQ missing authorization exposes /api/setup/backup to any authenticated user","description":"phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below have flawed authorization logic which exposes the /api/setup/backup endpoint to any authenticated user despite their permissions. SetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. Non-admin users can trigger a configuration backup and retrieve its path. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP. This issue is fixed in version 4.0.17.","status":"published","published":"2026-01-24T01:43:10.011Z","modified":"2026-10-28T02:30:21.510018781Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:44:59.079784Z"},{"id":"GHSA-wm8h-26fv-mg7g","title":"phpMyFAQ: /api/setup/backup accessible to any authenticated user (authz missing)","description":"### Summary\nAuthenticated non‑admin users can call /api/setup/backup and trigger a configuration backup. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP.\n\n### Details\nSetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. This allows any logged‑in user to create a sensitive backup and retrieve its path.\n\n### PoC\nPrecondition: API enabled, any authenticated non‑admin user.\n- Log in as a non‑admin user.\n- Call backup endpoint.\n```\ncurl -c /tmp/pmf_api_cookies.txt \\\n  -H 'Content-Type: application/json' \\\n  -d '{\"username\":\"tester\",\"password\":\"Test1234!\"}' \\\n  http://192.168.40.16/phpmyfaq/api/v3.0/login\n\ncurl -i -b /tmp/pmf_api_cookies.txt \\\n  -X POST --data '4.0.16' \\\n  http://192.168.40.16/phpmyfaq/api/setup/backup\n```\n\n### Impact\nLow‑privileged users can generate sensitive backups. If the ZIP is web‑accessible (server misconfiguration), this can lead to secret exposure.","status":"published","published":"2026-01-23T20:17:25Z","modified":"2026-02-03T03:07:09.717553Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-285","CWE-862"],"updated_at":"2026-11-02T15:46:58.767335Z"}]}}