CVE-2026-66672: CWE-502 Deserialization of Untrusted Data in Monkeysan Flatastic
Description
CVE-2026-66672 is a critical vulnerability in Monkeysan Flatastic versions up to and including 2.0. It involves unauthenticated PHP Object Injection due to deserialization of untrusted data (CWE-502). This flaw allows remote attackers to execute arbitrary code without authentication.
CVSS v3.1
Score 9.8critical
Affected software
Monkeysan
Flatastic
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Monkeysan Flatastic (<=2.0) is caused by unsafe deserialization of untrusted data, leading to unauthenticated PHP Object Injection. The CVSS 3.1 score of 9.8 indicates it is remotely exploitable with no privileges or user interaction required, resulting in high confidentiality, integrity, and availability impacts.
Potential Impact
Successful exploitation can lead to full system compromise, including remote code execution, data breach, and service disruption. The vulnerability affects confidentiality, integrity, and availability at a critical level.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to vulnerable instances and monitor for suspicious activity related to PHP object injection.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-07-27T14:00:48.793Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a86f1b2acd9273b49977c30
Added to database: 08/20/2026, 12:23:14 UTC
Last enriched: 09/11/2026, 01:01:48 UTC
Last updated: 10/05/2026, 06:48:18 UTC
Views: 41
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