EUVD-2026-39695
GHSA-c9rr-c93m-9hvh
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A08:2025 - Software or Data Integrity Failures
ASVS 5.0
V1 - Encoding and Sanitization Safe deserialization, type allowlists
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv1 – Jun 26, 2026
PHP Object Injection in the BuddyBoss Platform WordPress plugin (versions 3.0.4 and earlier) allows attackers with low-privilege Subscriber access to inject crafted serialized objects that are deserialized unsafely, potentially leading to remote code execution, data tampering, or denial of service depending on available gadget chains. The flaw was reported by Patchstack and carries a CVSS base score of 9.8; however, the 'Subscriber' qualifier implies authenticated access is required, which conflicts with the PR:N in the published vector. There is no public exploit identified at time of analysis and the issue is not listed in CISA KEV.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (patchstack) · only source for this CVE.
CVSS VectorVendor: patchstack
DescriptionCVE.org
Subscriber PHP Object Injection in Buddyboss Platform <= 3.0.4 versions.
Articles & Coverage 2
Executive ViewAI
BuddyBoss Platform WordPress plugin (versions 3.0.4 and earlier) contains a critical PHP object injection vulnerability that allows authenticated Subscriber-level users to execute arbitrary code, alter data, or cause service disruption. Organizations running affected versions face potential data compromise and operational risk; exploitation requires valid user accounts, limiting immediate attack surface but enabling insider or compromised-account threats.
Within 24 hours: Inventory all WordPress instances running BuddyBoss plugin version 3.0.4 or earlier; audit current Subscriber account roster for necessity and legitimacy. Within 7 days: Subscribe to Patchstack security advisories for patch release notification; implement Web Application Firewall (WAF) rules targeting PHP serialized object injection patterns in BuddyBoss request paths; review and restrict Subscriber role capabilities where operationally feasible. Within 30 days: Deploy patched BuddyBoss version immediately upon vendor release; conduct post-patch security audit of Subscriber account activity logs for exploitation indicators.
No vendor-released patch identified at time of analysis. Interim mitigations: (1) Temporarily disable BuddyBoss plugin if non-essential to business operations; (2) Deploy WAF/intrusion prevention rules to block serialization-based injection attempts targeting BuddyBoss endpoints; (3) Restrict Subscriber account creation to business-critical users only and enforce principle of least privilege; (4) Enable detailed audit logging for all Subscriber actions and monitor for suspicious code execution patterns; (5) Implement IP-based access controls limiting Subscriber logins to known corporate networks if feasible.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Insecure deserialization occurs when an application converts serialized data (a stream of bytes representing an object's state) back into a living object without proper validation.
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