Admin code execution via unsanitized field layout config
Published Jun 21, 2026 · Updated Jun 21, 2026
Code injection in Pixel & Tonic Craft CMS 5.5.0 through 5.9.13 allows remote authenticated users with admin access to execute PHP code. FieldsController::actionRenderCardPreview passes the fieldLayoutConfig POST array to Fields::createLayout without cleansing Yii2 event keys, so an on init handler runs during object initialization. A valid administrator session and CSRF token are required; successful exploitation runs arbitrary PHP in the server process and can disclose application secrets.
Summary
What happened
Code injection in Pixel & Tonic Craft CMS 5.5.0 through 5.9.13 allows remote authenticated users with admin access to execute PHP code. FieldsController::actionRenderCardPreview passes the fieldLayoutConfig POST array to Fields::createLayout without cleansing Yii2 event keys, so an on init handler runs during object initialization. A valid administrator session and CSRF token are required; successful exploitation runs arbitrary PHP in the server process and can disclose application secrets.
The record
- CVE
- CVE-2026-56382
- Published
- Jun 21, 2026
- Updated
- Jun 21, 2026
- Vendor
- Pixel & Tonic
- Product
- Craft CMS
- Classifications
- CWE-94, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jun 21, 2026CVE publishedPublication date reported by the CVE source.
- Jun 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.5.0 <5.9.14
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GHSA-86vw-x4ww-x467 authenticated HTTP proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo