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TI-2021-07541 Aliases CVE-2021-25294GHSA-wvm3-h9rx-qj3q

OpenCATS through 0.9.5-3 unsafely deserializes index.php?m=activity requests, leading to…

Priority MEDIUM 55CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-502.

Summary

OpenCATS through 0.9.5-3 unsafely deserializes index.php?m=activity requests, leading to remote code execution. This occurs because lib/DataGrid.php calls unserialize for the parametersactivity:ActivityDataGrid parameter. The PHP object injection exploit chain can leverage an __destruct magic method in guzzlehttp.

Why it matters now

EPSS 0.11338 96th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:opencats:opencats:*:*:*:*:*:*:*:*up to 0.9.5-3Vulnerableopencats
  • cpe:2.3:a:opencats:opencats:*:*:*:*:*:*:*:* Versions up to 0.9.5-3 Vulnerable ·opencats

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-25294
  2. 2026-10-03 Alias added: GHSA-wvm3-h9rx-qj3q

References

Exploit 1

Patch 1

Advisory 1

  • 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
  • TI-2021-18297 OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an… CVSS 3.1CRITICAL 9.8
  • TI-2022-20980 OpenCATS v0.9.6 was discovered to contain a remote code execution (RCE) vulnerability via… CVSS 3.1CRITICAL 9.8
See all 23 →

Sources

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