CVE-2026-65556: CWE-502 Deserialization of Untrusted Data in MihChe WPBruiser {no- Captcha anti-Spam}
Unauthenticated PHP Object Injection in WPBruiser {no- Captcha anti-Spam} <= 3.1.43 versions.
AI Analysis
Technical Summary
This vulnerability (CWE-502) involves unsafe deserialization in the WPBruiser {no- Captcha anti-Spam} WordPress plugin, allowing unauthenticated attackers to perform PHP object injection. The affected versions are all versions up to and including 3.1.43. The CVSS 3.1 base score is 9.8, indicating a critical severity with network attack vector, no privileges required, no user interaction, and impacts to confidentiality, integrity, and availability. No official patch or remediation information is currently available from the vendor or advisory sources.
Potential Impact
Successful exploitation can lead to remote code execution or other severe impacts compromising the confidentiality, integrity, and availability of the affected WordPress site. Since no privileges or user interaction are required, the vulnerability is highly exploitable remotely.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider disabling or removing the WPBruiser plugin if possible, or applying any available temporary mitigations recommended by the vendor.
CVE-2026-65556: CWE-502 Deserialization of Untrusted Data in MihChe WPBruiser {no- Captcha anti-Spam}
Description
Unauthenticated PHP Object Injection in WPBruiser {no- Captcha anti-Spam} <= 3.1.43 versions.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-502) involves unsafe deserialization in the WPBruiser {no- Captcha anti-Spam} WordPress plugin, allowing unauthenticated attackers to perform PHP object injection. The affected versions are all versions up to and including 3.1.43. The CVSS 3.1 base score is 9.8, indicating a critical severity with network attack vector, no privileges required, no user interaction, and impacts to confidentiality, integrity, and availability. No official patch or remediation information is currently available from the vendor or advisory sources.
Potential Impact
Successful exploitation can lead to remote code execution or other severe impacts compromising the confidentiality, integrity, and availability of the affected WordPress site. Since no privileges or user interaction are required, the vulnerability is highly exploitable remotely.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider disabling or removing the WPBruiser plugin if possible, or applying any available temporary mitigations recommended by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-07-22T08:54:23.962Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a749d3bbf8831d539dba5b6
Added to database: 08/06/2026, 14:42:03 UTC
Last enriched: 08/06/2026, 15:26:29 UTC
Last updated: 08/06/2026, 22:13:05 UTC
Views: 2
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