CVE-2026-8689 Missing authorization in Visualizer: Tables and Charts Manager for WordPress
Authenticated subscribers can create arbitrary charts and access or modify other users' chart data due to missing capability checks in AJAX handlers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8689?
CVE-2026-8689 is a medium-severity missing authorization vulnerability in themeisle Visualizer: Tables and Charts Manager for WordPress, published on 28 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Visualizer: Tables and Charts Manager for WordPress plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.11.14. This is due to a missing capability check on the renderChartPages() and uploadData() functions, where the wp_ajax_visualizer-create-chart and wp_ajax_visualizer-edit-chart AJAX actions invoke renderChartPages() without any current_user_can() check, and wp_ajax_visualizer-upload-data invokes uploadData() which also lacks a capability check and validates its nonce without an action argument, making it trivially bypassable. This makes it possible for authenticated attackers, with Subscriber-level access and above, to create arbitrary chart posts and access or modify chart data belonging to other users, including administrators.
Weakness: CWE-862
Which versions are affected by CVE-2026-8689?
How do I fix CVE-2026-8689?
No fix has been published for CVE-2026-8689 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-2026-8689 being exploited?
There is no known exploitation of CVE-2026-8689 in the wild and no public exploit code.
Sources
Also known as GHSA-m527-mm28-jvgm.