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TI-2026-22120 Aliases CVE-2026-27760GHSA-h957-4jfh-qc3p

OpenCATS PHP Code Injection via installer AJAX endpoint

Priority HIGH 75CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.32975 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
opencatsOpenCATSup to 0.9.7.4—Patch availableCNA
  • OpenCATS Vendoropencats Affected up to 0.9.7.4 Fixed in — Patch available CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-27760
  2. 2026-10-03 Alias added: GHSA-h957-4jfh-qc3p
  3. 2026-10-25 EPSS moved to the 95th–99th percentile

References

Exploit 1

Patch 2

Other 2

  • TI-2021-22549 OpenCATS 0.9.4 Remote Code Execution via Resume Upload CVSS 4.0CRITICAL 9.3
  • TI-2026-36639 OpenCATS - SQL Injection in DataGrid sortDirection Parameter CVSS 4.0HIGH 8.4
  • TI-2023-12031 Cross-site scripting in OpenCATS CVSS 3.1MEDIUM 6.1
  • TI-2023-12032 Cross-site scripting in OpenCATS CVSS 3.1MEDIUM 5.4
  • TI-2023-12030 Open redirect in OpenCATS CVSS 3.1MEDIUM 5.4
  • TI-2023-12033 Cross-site request forgery in OpenCATS CVSS 3.1MEDIUM 5.4
See all 37 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences