CVE-2021-25294
CRITICAL
9.8
CVSS Score
Published: January 18, 2021 at 05:28 AM UTC
Updated: June 17, 2026 at 03:41 AM UTC
1 product affected across 1 vendorOpencats
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Severity
CRITICAL9.8
Exploit prediction
EPSS 11%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v ≤ 0.9.5-3
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-application-security/2021/01/16/09_opencats_php_object_injection.htmlx_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats_php_object_injection.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-502
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