Duplicate Advisory: Craft CMS: Authorization bypass: view-only Categories user can modify category structure via structures/move-element
Description
Craft CMS versions 5.0.0-RC1 through 5.10.5 contain an authorization vulnerability allowing users with only viewCategories permission to modify the category structure. This occurs because the system incorrectly uses the view permission to authorize structural changes, enabling reordering and re-parenting of categories without proper save permission. Modifying category structure changes category URIs and can disrupt navigation menus. The issue is fixed in version 5.10.6.
CVSS v3.1
Score 4.3medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Craft CMS 5.0.0-RC1 through 5.10.5 has an incorrect authorization vulnerability (CWE-863) where a control-panel user with only viewCategories permission can modify category structures via the structures/move-element action. The structureEditable flag is incorrectly computed from the view permission instead of the save permission, and the StructuresController authorizes the mutating action without a save permission re-check. This allows unauthorized reordering and re-parenting of categories, altering category URIs and potentially corrupting navigation menus. The vulnerability is addressed in version 5.10.6.
Potential Impact
An attacker with limited permissions (viewCategories only) can modify the category structure, which can change category URLs and disrupt navigation menus relying on category taxonomy. This does not lead to data confidentiality loss or availability impact but results in integrity issues affecting site navigation and content organization.
Mitigation Recommendations
Upgrade Craft CMS to version 5.10.6 or later, where this authorization vulnerability is fixed. No other mitigation is indicated or required.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-4hc4-qjfx-wjf3
- Osv Schema Version
- 1.4.0
- Ecosystems
- ["Packagist"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6a9845c5acd9273b496aff23
Added to database: 09/02/2026, 15:50:29 UTC
Last enriched: 09/07/2026, 18:37:47 UTC
Last updated: 10/02/2026, 14:18:51 UTC
Views: 59
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