CVE-2026-86783
PostX < 5.0.41 - Unauthenticated Custom Field Key Disclosure via REST API
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 23, 2026
- Updated
- Sep 23, 2026
- Reserved
- Sep 8, 2026
Description
The Post Grid Gutenberg Blocks WordPress plugin before 5.0.41 does not perform an authorization or post-visibility check on a REST API route that returns the custom field keys of a given post, allowing unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | CISA-ADP |
Weaknesses
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Affected Products
| Product | Versions |
|---|---|
Post Grid Gutenberg BlocksUnknown |
|
References
- https://wpscan.com/vulnerability/719fc130-748b-4bad-8091-2858664299ed/exploitvdb-entrytechnical-description
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