Is there a public exploit for CVE-2026-54453?

No public exploit for CVE-2026-54453 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-54453?

CVE-2026-54453 scores CVSS 7.2 (v3.1), rated high.

7.2 High

OpenCATS is an open-source applicant tracking system and recruitment CRM for staffing agencies and hiring teams.

CVE-2026-54453

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.

Assessment

CVSS: 7.2 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 28 October 2026
Last updated: 3 November 2026
Weakness: CWE-74, CWE-94
Assigner: security-advisories@github.com

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

At the source

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