wpForo Forum < 3.1.2 - Subscriber+ Cross-User AI Chat Message Deletion via IDOR

Versions reported by the vendor

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

• Unknown wpForo Forum

  • before 3.1.2affected · semver

Other highest-scoring records for the same primary product.

• CVE-2026-80513wpForo Forum < 3.1.6 - Subscriber+ PHP Object Injection via Profile Fields
  30Monitor
• CVE-2026-80514wpForo Forum 3.0.0 - 3.1.5 - Unauthenticated AI Credit Exhaustion via IP Rate Limit Bypass
  21Monitor
• CVE-2026-12696wpForo Forum < 3.1.2 - Subscriber+ Stored XSS via Profile Location Field
  21Monitor

Published before and after this one in the same product

• Later →CVE-2026-12698Aug 4, 2026 · wpForo Forum < 3.1.3 - Subscriber+ Account Status and Reputation Manipulation via Profile Update Mass Assignment
  17Monitor

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.