Craft CMS up to 5.9.20 actionMoveToSection section access control

Summaryinfo

A vulnerability classified as critical has been found in Craft CMS up to 5.9.20. Affected by this issue is the function EntriesController::actionMoveToSection. Performing a manipulation of the argument section results in access control. This vulnerability is reported as CVE-2026-50280. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Craft CMS up to 5.9.20. This affects the function EntriesController::actionMoveToSection. The manipulation of the argument section with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality. The summary by CVE is:

Craft CMS is a content management system (CMS). In versions 5.0.0-RC1 and above prior to 5.9.21, the EntriesController::actionMoveToSection() endpoint gates the destination section only by viewEntries:$section->uid rather than requiring saveEntries permission (the source entry is separately checked via Entry::canMove()). As a result, a low-privileged authenticated control-panel user who can move an entry out of its current section can call moveEntryToSection() to rewrite the entry's sectionId and save it into a section where they have read access but no write access. This breaks the section-level authorization model, letting a user with limited permissions inject content into a protected section and interfere with editorial boundaries, approval workflows, and section-specific business logic. This issue has been fixed in version 5.9.21.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-50280 since 06/04/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 5.9.21 eliminates this vulnerability. Applying the patch 0a6b916f6367b0162b2eaf2366add67b45fa98ea is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Content Management System

Vendor

• Craft

Name

• CMS

Version

• 5.9.0
• 5.9.1
• 5.9.2
• 5.9.3
• 5.9.4
• 5.9.5
• 5.9.6
• 5.9.7
• 5.9.8
• 5.9.9
• 5.9.10
• 5.9.11
• 5.9.12
• 5.9.13
• 5.9.14
• 5.9.15
• 5.9.16
• 5.9.17
• 5.9.18
• 5.9.19
• 5.9.20

License

• free

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• 🔒
• 🔒
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CPE 2.2info

• 🔒
• 🔒
• 🔒

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