CVEvulnerability
CVE-2021-25294
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2021-01-18
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-502
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.
Affected configurations
• opencats opencats (<= 0.9.5-3)
Related
Weakness · CWE (1)
- CWE-502 Deserialization of Untrusted Data weakness
References
- https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-application-security/2021/01/16/09_opencats_php_object_injection.html Patch, Third Party Advisory
- https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats_php_object_injection.html Exploit, Third Party Advisory
- https://www.opencats.org/news/ Vendor Advisory
- https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-application-security/2021/01/16/09_opencats_php_object_injection.html Patch, Third Party Advisory
- https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats_php_object_injection.html Exploit, Third Party Advisory
- https://www.opencats.org/news/ Vendor Advisory