# CVE-2026-87959: WPBot WordPress plugin missing capability check in AJAX settings action

Source: https://junglewise.ai/threats/cve-2026-87959-wpbot-wordpress-plugin-missing-capability-check-in-ajax-settings  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-16. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-87959 · Severity: medium · CVSS 5.4 · Published 2026-09-16

WPBot is a WordPress plugin that integrates Claude AI capabilities into WordPress sites. A missing authorization check in its settings AJAX endpoint allows any subscriber-level user to overwrite AI provider settings, including the API key, potentially compromising the site's AI integration and enabling abuse of the API credentials.

## Quick answers

**Is CVE-2026-87959 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-87959 being exploited in the wild.

**How severe is CVE-2026-87959?** Medium severity, with a CVSS score of 5.4, published 16 September 2026.

**Which products and versions are affected?** WPBot WPBot 8.7.2 to 8.7.5.

**Is there a fix for CVE-2026-87959?** A patch was published on 2026-09-16: Fixed in version 8.7.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-87959 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-87959?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

WPBot before version 8.7.6 fails to validate user capabilities in an AJAX action responsible for saving Claude AI provider settings. The vulnerability is a broken access control issue (CWE-284, OWASP A5) that allows any authenticated user with subscriber-level privileges to call this endpoint and modify settings including the Claude AI API key. No authentication bypass is required—the attacker simply needs a valid subscriber account. An attacker can overwrite API credentials, potentially disrupting legitimate AI functionality, redirecting AI requests to malicious endpoints, or gaining access to the victim site's API quota and costs.

## Affected products

- WPBot WPBot 8.7.2 to 8.7.5

## Timeline

- 2026-09-14: disclosed
- 2026-09-16: patched: Fixed in version 8.7.6

## References

- [https://wpscan.com/vulnerability/3d42171d-6335-4bd3-bbed-fc446da3f945/](https://wpscan.com/vulnerability/3d42171d-6335-4bd3-bbed-fc446da3f945/)