---
cve: "CVE-2021-25294"
severity: "LOW"
cvss: 3.1
epss: "10.7%"
vendor: "n/a"
kev: false
exploited: false
published: "2021-01-18 06:15:12"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T09:33:05+02:00"
---

# CVE-2021-25294

> 3.1 LOW · 🧪 PoC

## Beschreibung

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.

## Referenzen

- <https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats_php_object_injection.html>
- <https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-application-security/2021/01/16/09_opencats_php_object_injection.html>
- <https://www.opencats.org/news/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-25294) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_