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OpenAdvisories
High · 7.2 CVE-2026-1273 EUVD-2026-9349GHSA-7rp9-ph5m-7mh4

PostX <= 5.0.8 - Authenticated (Administrator+) Server-Side Request Forgery via REST API Endpoints

Published Mar 4, 2026 · Updated Apr 8, 2026 · Assigned by Wordfence

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

VendorProductAffectedFixed
wpxpo Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX ≤ 5.0.8 —

References