CVE-2026-54453 OpenCATS: Authenticated Remote Code Execution via SettingsUI (manageProfessional)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-54453?
CVE-2026-54453 is a high-severity vulnerability in OpenCATS, published on 28 Oct 2026.
Official description
OpenCATS is an open-source applicant tracking system and recruitment CRM for staffing agencies and hiring teams. Prior to version 0.10.0, the Professional License configuration feature in `SettingsUI` (`manageProfessional`) accepts administrator-controlled license key input that is reconstructed into a PHP `define()` statement in `config.php` without safe escaping. Because the application includes `config.php`, crafted input can alter the file's PHP syntax and cause persistent arbitrary PHP execution with the web server process privileges. An authenticated administrator must have Settings module access and permission to update Professional License configuration, and `config.php` must be writable for this write-based path. Successful exploitation can read, modify or delete application data, expose candidate, contact, company, job order and user account information, alter the installation or configuration, and provide a foothold for further attacks. Unauthenticated exploitation and exploitation without Settings access are not established. This issue is fixed in version 0.10.0.
Which versions are affected by CVE-2026-54453?
How do I fix CVE-2026-54453?
No fix has been published for CVE-2026-54453 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-54453 being exploited?
There is no known exploitation of CVE-2026-54453 in the wild and no public exploit code.
Sources
Also known as GHSA-627w-743r-4cg2.