CVE-2026-86798: CWE-79 Cross-Site Scripting (XSS) in HootBoard
Description
The HootBoard WordPress plugin through 3.1.4 does not perform any authorisation check on some of its REST endpoints, and does not escape the values stored through them before outputting them in a public page, allowing unauthenticated users to inject arbitrary web scripts that will execute in the browser of anyone visiting that page, including administrators.
CVSS v3.1
Score 8.8high
Affected software
HootBoard
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86798 is a cross-site scripting (CWE-79) vulnerability in the HootBoard WordPress plugin through version 3.1.4. The plugin fails to perform authorization checks on certain REST API endpoints and does not escape user-supplied values before rendering them on public pages. This flaw enables unauthenticated attackers to inject malicious scripts that execute in the context of any user viewing the affected page, potentially leading to session hijacking or other script-based attacks.
Potential Impact
Unauthenticated attackers can inject and execute arbitrary JavaScript in the browsers of users visiting affected pages, including administrators. This can lead to theft of credentials, session tokens, or other sensitive information accessible via the browser. The vulnerability affects all users who view the compromised content.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the REST endpoints if possible and monitor for suspicious activity. Avoid using affected versions of the plugin in sensitive environments.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-08T12:17:03.280Z
- State
- PUBLISHED
Threat ID: 6acb2de32cdf04f656b78d0a
Added to database: 10/11/2026, 06:34:11 UTC
Last enriched: 10/11/2026, 07:03:26 UTC
Last updated: 10/11/2026, 21:33:34 UTC
Views: 18
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