CVE-2026-65552 in Export User Data Plugin
Summary
by MITRE • 08/06/2026
Subscriber PHP Object Injection in Export User Data <= 2.2.6 versions.
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Analysis
by VulDB Data Team • 08/06/2026
This vulnerability represents a critical php object injection flaw that affects the export user data functionality in versions of the plugin prior to 2.2.6. The issue stems from inadequate input validation and sanitization within the export process where user-supplied data is directly serialized and deserialized without proper security controls. Attackers can manipulate the export parameters to inject malicious php objects that will be executed during the deserialization phase, potentially leading to arbitrary code execution on the target system. The vulnerability specifically occurs when the plugin processes user data for export operations, allowing remote attackers to construct specially crafted payloads that exploit the lack of proper object validation during the unserialization process.
The technical implementation of this vulnerability aligns with common php object injection patterns where attacker-controlled data flows into the unserialize() function without proper sanitization. This creates an environment where malicious objects can be constructed with methods that execute harmful commands when the object is reconstructed. The flaw exists in the plugin's handling of user input during export operations, where the serialized data structure is not properly validated before being processed by the php deserialization engine. This type of vulnerability typically falls under the category of CWE-502 which specifically addresses unsafe deserialization practices and can lead to remote code execution, privilege escalation, or data compromise.
The operational impact of this vulnerability extends beyond simple data exposure as it provides attackers with a potential entry point for more sophisticated attacks. Successful exploitation could allow an attacker to execute arbitrary commands on the server, potentially leading to complete system compromise. The vulnerability affects versions up to 2.2.6, indicating that proper security measures were implemented in later releases to address this specific weakness. Organizations using affected versions face significant risk as the attack surface includes any user who can trigger the export functionality, making it particularly dangerous in multi-user environments where privileged access might not be properly enforced.
Mitigation strategies should focus on immediate patching of the vulnerable plugin to version 2.2.6 or later where the deserialization issues have been addressed. Additionally, implementing proper input validation and sanitization for all user-supplied data that flows into serialization functions is essential. Organizations should also consider restricting export functionality to authorized users only and monitoring for unusual export activity patterns. The fix typically involves ensuring that any data passed to unserialize() is properly validated and that the plugin uses secure serialization practices such as whitelisting allowed classes or implementing proper object type checking before deserialization occurs. This vulnerability demonstrates the importance of following secure coding practices and adhering to standards such as those outlined in the owasp top ten project which specifically addresses unsafe deserialization as a critical security risk.