CVE-2026-42842
Medium
Description
The form plugin for Grav adds the ability to create and use forms. Prior to 9.1.0, a Stored Cross-Site Scripting (XSS) vulnerability exists in the Grav CMS Form plugin's select field template. Taxonomy tag and category values are rendered with the Twig |raw filter in the admin panel, bypassing the global autoescape protection. An editor-level user can inject arbitrary JavaScript that executes in any administrator's browser session when they view or edit any page in the admin panel. This vulnerability is fixed in 9.1.0.
SeverityMedium
CVSS5.4
Exploit probability—
ProductGetgrav/grav
PublishedMay 11, 2026
First seenMay 11, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- getgrav/grav2.0.0-beta.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| getgrav/gravPackagist | v < 2.0.0-beta.2 | 2.0.0-beta.2 |
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