User Registration has unauthenticated broken access control
User Registration through 5.2.7 has broken access control without an attacker login requirement. The disclosed class is a missing or inadequate authorization boundary; the protected data or operation is not named. The CNA vector indicates limited confidentiality impact without victim interaction. The export does not identify an endpoint, action, function or concrete data fields, so a specific exploit sequence cannot be established. The affected-version data marks 5.2.8 unaffected.
- Component
- User Registration
- Plugin slug
user-registration- Affected
- n/a through 5.2.7
- Safe version
5.2.8- Published
- Sep 17, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Sep 17, 2026 and is one of 49 known issues for this plugin.
Update, patch or deactivate.
Update User Registration to 5.2.8 or later. Enforce server-side authorization at the affected operation and on each requested object before returning data or applying a change. Derive permitted scope from the authenticated identity, not a caller-supplied identifier or role.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
Unauthenticated Broken Access Control in User Registration <= 5.2.7 versions.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N