Vulnerability · Published Mar 4, 2026 · Assigned by Wordfence
CVE-2026-1273PostX <= 5.0.8 - Authenticated (Administrator+) Server-Side Request Forgery via REST API Endpoints
High 7.2
In plain English
A high-severity server-side request forgery in Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX from wpxpo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| wpxpo | Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX | 0 – through 5.0.8 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/afe6d4ac-1712-415e-9995-cb7c8fe4e1a0?source=cve
- https://plugins.trac.wordpress.org/browser/ultimate-post/tags/5.0.5/classes/Importer.php#L196
- https://plugins.trac.wordpress.org/browser/ultimate-post/trunk/classes/Importer.php#L196
- https://plugins.trac.wordpress.org/browser/ultimate-post/trunk/classes/Importer.php#L261
- https://plugins.trac.wordpress.org/browser/ultimate-post/tags/5.0.5/classes/Importer.php#L261
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3469409%40ultimate-post&new=3469409%40ultimate-post&sfp_email=&sfph_mail=