CVE-2026-86799: CWE-79 Cross-Site Scripting (XSS) in Forms
Description
The Forms WordPress plugin before 3.0.2 does not sanitise submitted form values on storage, nor escape them before outputting them on the form submissions screen in the administration dashboard, allowing unauthenticated users to inject arbitrary web scripts that will execute in the browser of any administrator viewing the submissions.
CVSS v3.1
Score 8.8high
Affected software
Forms
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86799 is a stored Cross-Site Scripting (CWE-79) vulnerability affecting the Forms WordPress plugin versions prior to 3.0.2. The flaw arises because the plugin does not sanitize input data on storage nor escape it on output in the admin interface, enabling unauthenticated attackers to inject malicious scripts. These scripts execute in the context of any administrator who views the affected form submissions, potentially leading to session hijacking or other script-based attacks.
Potential Impact
An unauthenticated attacker can inject arbitrary JavaScript that executes in the browser of an administrator viewing form submissions. This can lead to administrative session compromise or other malicious actions performed with administrator privileges. The vulnerability affects the confidentiality and integrity of the administrative interface.
Mitigation Recommendations
Upgrade the Forms WordPress plugin to version 3.0.2 or later, where this vulnerability is fixed. No other mitigation is required once the plugin is updated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-08T12:19:32.916Z
- State
- PUBLISHED
Threat ID: 6acf22582cdf04f656513ba4
Added to database: 10/14/2026, 06:34:00 UTC
Last enriched: 10/14/2026, 06:49:49 UTC
Last updated: 10/14/2026, 19:00:33 UTC
Views: 4
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