CVE-2026-86194: Missing Authorization in getgrav grav-plugin-form
Description
Grav Form Plugin before 9.1.22 fails to verify page authorization when resolving forms by name across pages, allowing anonymous visitors to execute form actions defined on login-restricted or unpublished pages. Attackers can POST to any public page with a restricted form's name to trigger save, upload, email, or call actions without authentication.
CVSS v4.0
Score 6.9medium
Affected software
getgrav
grav-plugin-form
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Grav Form Plugin versions prior to 9.1.22 do not verify page authorization when resolving forms by name across pages. This flaw permits anonymous visitors to perform form actions defined on pages that are either login-restricted or unpublished by sending POST requests to any public page using the restricted form's name. The vulnerability enables unauthorized execution of actions like saving data, uploading files, sending emails, or invoking calls without requiring authentication.
Potential Impact
Unauthorized users can bypass page-level access controls to execute form actions intended only for authenticated users. This could lead to unauthorized data submission, file uploads, email sending, or other form-triggered operations, potentially compromising application integrity or confidentiality. However, there is no indication of remote code execution or privilege escalation beyond the form actions.
Mitigation Recommendations
Upgrade Grav Form Plugin to version 9.1.22 or later, where this authorization check issue has been fixed. No other mitigation is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-05T11:51:31.102Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9c0d21acd9273b49d97140
Added to database: 09/05/2026, 12:37:53 UTC
Last enriched: 09/18/2026, 22:54:47 UTC
Last updated: 10/20/2026, 18:48:24 UTC
Views: 85
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