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Description

The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the ultp_shareCount_callback() function in all versions up to, and including, 5.0.5. This makes it possible for unauthenticated attackers to modify the share_count post meta for any post, including private or draft posts.

PUBLISHED Reserved 2026-01-08 | Published 2026-04-16 | Updated 2026-04-16 | Assigner Wordfence




MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-862 Missing Authorization

Product status

Default status
unaffected

Any version
affected

Timeline

2025-12-24:Discovered
2026-01-08:Vendor Notified
2026-04-15:Disclosed

Credits

Mohammad Amin Hajian finder

References

www.wordfence.com/...-5d35-4ce6-9453-1538a6f7752f?source=cve

plugins.trac.wordpress.org/.../tags/5.0.6/classes/Blocks.php

cve.org (CVE-2026-0718)

nvd.nist.gov (CVE-2026-0718)

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