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.

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Affected Version(s)

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