Authorization Bypass Vulnerability in Ultimate Member Plugin by Ultimate Member
CVE-2026-96451

8.8HIGH

Key Information:

Vendor

WordPress
Status
Ultimate Member
Vendor
CVE Published:
3 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-96451?

A vulnerability exists in the Ultimate Member plugin which allows attackers to bypass authorization controls via user-controlled keys. This flaw can lead to privilege escalation, enabling unauthorized access to user accounts and sensitive information. The affected versions range from n/a to 2.13.1, potentially impacting a wide range of WordPress setups that utilize this plugin. It is crucial for users and administrators to apply security patches and update to secure versions to mitigate risks associated with this vulnerability.

Affected Version(s)

Ultimate Member 0 <= 2.13.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

wpexploit-CVE-2026-96451
Created by MRdark-ops

References

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

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Intrudify | Patchstack Bug Bounty Program
.