CVE-2021-25294

PoC —

CVSS 3.1

9.8 critical

EPSS

11%p96

Published

Jan 18, 2021 (Jan 18, 2021)

Modified

Jun 17, 2026

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.

Vendors: opencats
Products: opencats
Weakness: CWE-502
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (10.7%)

In the news0 stories

No ingested article mentions this CVE yet.