Object Injection Vulnerability in Ultimate Member by Ultimate Member
CVE-2026-115968

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Ultimate Member
Vendor
CVE Published:
28 October 2026

What is CVE-2026-115968?

A vulnerability exists in the Ultimate Member plugin for WordPress that allows for object injection through deserialization of untrusted data. This security issue is present in versions of Ultimate Member up to 2.13.1, potentially allowing attackers to manipulate application behavior. Proper input validation and sanitization measures should be implemented to mitigate exploitation risks associated with this vulnerability.

Affected Version(s)

Ultimate Member 0 <= 2.13.1

References

https://patchstack.com/database/wordpress/plugin/ultimate...
vdb-entry

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ananda Dhakal (Patchstack)
.