Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/ultimate-post/tags/5.0.5/classes/Impo
- https://plugins.trac.wordpress.org/browser/ultimate-post/tags/5.0.5/classes/Impo
- https://plugins.trac.wordpress.org/browser/ultimate-post/trunk/classes/Importer.
- https://plugins.trac.wordpress.org/browser/ultimate-post/trunk/classes/Importer.
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old
- https://www.wordfence.com/threat-intel/vulnerabilities/id/afe6d4ac-1712-415e-999
FAQ
What is CVE-2026-1273?
CVE-2026-1273 is a vulnerability with a CVSS score of 7.2 (HIGH). 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/v...
How severe is CVE-2026-1273?
CVE-2026-1273 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-1273?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.