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CVE-2026-27760

OpenCATS PHP Code Injection via installer AJAX endpoint

Published
Last modified
published
Not listed in CISA KEV
Fix
Fix or patch referenced
1 Metasploit module, 1 Nuclei template
  • Exploitation: poc
  • Automatable: no
  • Technical impact: total

Summary

OpenCATS prior to commit 3002a29 contains a PHP code injection vulnerability in the installer AJAX endpoint that allows unauthenticated attackers to execute arbitrary code by injecting PHP statements into the databaseConnectivity action parameter. Attackers can break out of the define() string context in config.php using a single quote and statement separator to inject malicious PHP code that persists and executes on every subsequent page load when the installation wizard remains incomplete.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: total

  3. Record last updated
  4. EPSS reached 10%

    FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

  • opencats OpenCATS

    through 0.9.7.4

References 8

chocapikk.com

GitHub · opencats/OpenCATS

vulncheck.com

GitHub · rapid7/metasploit-framework

GitHub · projectdiscovery/nuclei-templates