PostX <= 5.0.8 - Authenticated (Administrator+) Server-Side Request Forgery via REST API Endpoints
| CVE | CVE-2026-1273 |
|---|---|
| CVSS | 7.2 (High) |
| Publicly Published | March 3, 2026 |
| Last Updated | March 4, 2026 |
| Researchers |
Mohammad Amin Hajian (mamadrce)
Pouria Shahba (p0or1ya) |
Description
The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.0.8 via the `/ultp/v3/starter_dummy_post/` and `/ultp/v3/starter_import_content/` REST API endpoints. This makes it possible for authenticated attackers, with Administrator-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Post Grid Gutenberg Blocks – PostX
| Software Type | Plugin |
|---|---|
| Software Slug | ultimate-post (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 5.0.9, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Post Grid Gutenberg Blocks – PostX
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