CVE CVE-2026-1273

CVE-2026-1273

WordPress

Severity: HIGH
CVSS: 7.2CVSS
Published: 2026-03-04
Last modified: 2026-03-04
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CWE: CWE-918

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

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=

Summary

Description

References