Custom Post Type UI <= 1.18.0 - Missing Authorization to Unauthenticated (Previously Administrator+) Custom Post Type Modification
Published Dec 4, 2025 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
Custom Post Type UI <= 1.18.0 - Missing Authorization to Unauthenticated (Previously Administrator+) Custom Post Type Modification
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
The Custom Post Type UI plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.18.0. This is due to the plugin not verifying that a user has the required capability to perform actions in the "cptui_process_post_type" function. This makes it possible for authenticated attackers, with subscriber level access and above, to add, edit, or delete custom post types in limited situations.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
Record history
Published Dec 4, 2025 · Last refreshed Nov 3, 2026