CVE-2026-0718 Missing authorization in Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX
Unauthenticated attackers can modify share counts for any post, including private ones, due to missing capability checks in the PostX WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-0718?
CVE-2026-0718 is a medium-severity missing authorization vulnerability in wpxpo Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX, published on 16 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-0718?
How do I fix CVE-2026-0718?
No fix has been published for CVE-2026-0718 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-0718 being exploited?
There is no known exploitation of CVE-2026-0718 in the wild and no public exploit code.
Sources
Also known as GHSA-8jmv-f2mx-h22c.