Unauthorized Data Modification in PostX Plugin for WordPress
CVE-2026-0718

5.3MEDIUM

Key Information:

Vendor

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

What is CVE-2026-0718?

The PostX plugin for WordPress contains a vulnerability that allows unauthorized users to modify post meta data due to a missing capability check in the ultp_shareCount_callback() function. This flaw affects all versions up to and including 5.0.5, enabling unauthenticated attackers to alter the share_count of any post, including private and draft posts, posing significant privacy and data integrity risks.

Affected Version(s)

Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX 0 <= 5.0.5

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset?old_path=/ul...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mohammad Amin Hajian
.