CVE-2026-115968
Deferred Deferred - Pending Action

Deserialization of Untrusted Data in Ultimate Member

Publication date: 2026-10-28

Last updated on: 2026-10-28

Assigner: Patchstack

Description
Deserialization of Untrusted Data vulnerability in Ultimate Member Ultimate Member ultimate-member allows Object Injection.This issue affects Ultimate Member: from n/a through 2.13.1.

CVSS Scores

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Meta Information

Published
2026-10-28
Last Modified
2026-10-28
Generated
2026-10-28
AI Q&A
2026-10-28
EPSS Evaluated
N/A
NVD
CVE-2026-115968
EUVD
EUVD-2026-112120

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Ultimate Member Ultimate Member 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

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Executive Summary

This is a Deserialization of Untrusted Data vulnerability in the Ultimate Member plugin for WordPress. It allows attackers to inject malicious objects by exploiting improper handling of untrusted input during deserialization. This can lead to object injection attacks.

Impact Analysis

This vulnerability can allow attackers to execute arbitrary code, take control of your website, steal sensitive data, or perform unauthorized actions. The high CVSS score (9.8) indicates severe impact, including full system compromise.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face fines or legal consequences if exploited.

Mitigation Strategies

Immediately update Ultimate Member plugin to the latest version beyond 2.13.1 to address the deserialization flaw. Disable the plugin if an update is not available. Monitor network traffic for unusual object injection patterns targeting the plugin.

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