VULNERABILITY INTELLIGENCE

CVE-2021-25294

CVSS score9.8 CRITICAL
EPSS probability11.34%
CISA KEVNot currently listed
Published2021-01-18
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • nvd@nist.gov: CWE-502

Primary references