CVE-2026-1273

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.

The following products are affected by CVE-2026-1273 vulnerability.

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Here, you will find a curated list of external links that provide in-depth information to CVE-2026-1273.

URL	Resource
https://plugins.trac.wordpress.org/browser/ultimate-post/tags/5.0.5/classes/Importer.php#L196
https://plugins.trac.wordpress.org/browser/ultimate-post/tags/5.0.5/classes/Importer.php#L261
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/changeset?sfp_email=&sfph_mail=&reponame=&old=3469409%40ultimate-post&new=3469409%40ultimate-post&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/afe6d4ac-1712-415e-9995-cb7c8fe4e1a0?source=cve