CVE-2026-8689 json
Visualizer: Tables and Charts Manager for WordPress <= 3.11.14 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Chart Creation and Modification via renderChartPages() and uploadData() Functions
published 5mo ago modified 4mo ago also EUVD-2026-32746
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
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.
Is CVE-2026-8689 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5mo ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- themeisle Visualizer: Tables and Charts Manager for WordPress
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/d18e9696-0f96-4478-9871-a93ac2976c11?source=cve
- plugins.trac.wordpress.org /browser/visualizer/tags/4.0.1/classes/Visualizer/Module/Chart.php#L531
- plugins.trac.wordpress.org /browser/visualizer/tags/4.0.1/classes/Visualizer/Module/Chart.php#L1221
- plugins.trac.wordpress.org /browser/visualizer/tags/4.0.1/classes/Visualizer/Module/Chart.php#L56
- plugins.trac.wordpress.org /browser/visualizer/tags/3.11.14/classes/Visualizer/Module/Chart.php#L531
- plugins.trac.wordpress.org /browser/visualizer/tags/3.11.14/classes/Visualizer/Module/Chart.php#L1221
- plugins.trac.wordpress.org /browser/visualizer/tags/3.11.14/classes/Visualizer/Module/Chart.php#L56
- plugins.trac.wordpress.org /changeset/3474710
Sources
- CVE List CVE-2026-8689
- NVD CVE-2026-8689
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.