CVE-2026-42842
grav-plugin-form: XSS via Taxonomy Field Values in Admin Panel
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | getgrav |
| Product | grav |
| Published | May 11, 2026 |
| Last Updated | May 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
getgrav / grav
< 2.0.0-beta.2
getgrav / grav-plugin-form
< 9.1.0