CVE-2026-96451: WordPress Ultimate Member plugin <= 2.13.1 - Privilege Escalation vulnerability

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Patchstack). Independent of NVD's CPE analysis and usually ahead of it.

• Ultimate Member Ultimate Member

  • up to and including 2.13.1affectedfixed in 2.14.0

Other highest-scoring records for the same primary product.

• CVE-2026-62059WordPress Ultimate Member plugin <= 2.13.1 - SQL Injection vulnerability
  30Monitor
• CVE-2026-96539WordPress Ultimate Member plugin <= 2.13.1 - Privilege Escalation vulnerability
  22Monitor
• CVE-2025-47691WordPress Ultimate Member plugin <= 2.10.3 - Arbitrary Function Call vulnerability
  22Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

The endpoint fetches the record by the ID sent in the request, but never checks whether the record belongs to the requesting user.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1const invoice = await Invoice.findById(req.params.id);2res.json(invoice);

1const invoice = await Invoice.findOne({2  id: req.params.id,3  ownerId: req.user.id,4});5if (!invoice) return res.sendStatus(404);6res.json(invoice);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.