Server-Side Request Forgery Vulnerability in PostX Plugin for WordPress
CVE-2026-1273

7.2HIGH

Key Information:

Vendor

WordPress
Status
Post Grid Gutenberg Blocks For News, Magazines, Blog Websites – Postx
Vendor
CVE Published:
4 March 2026

What is CVE-2026-1273?

The PostX plugin for WordPress is susceptible to a Server-Side Request Forgery (SSRF) vulnerability that affects all versions up to and including 5.0.8. This issue is present in the REST API endpoints /ultp/v3/starter_dummy_post/ and /ultp/v3/starter_import_content/. Authenticated users with Administrator-level privileges can exploit this vulnerability to initiate web requests to arbitrary locations from the web application, potentially allowing the attacker to access sensitive data from internal services.

Affected Version(s)

Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX 0 <= 5.0.8

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/ultimate-post/...
https://plugins.trac.wordpress.org/browser/ultimate-post/...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mohammad Amin Hajian
Pouria Shahba
.