Cross-site scripting in Craft CMS - CVE-2026-27126
Published: April 17, 2026
Vulnerability identifier: #VU126479
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-27126
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Pixel & Tonic, Inc.
Affected software:
Craft CMS
Craft CMS
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary JavaScript in another user's browser.
The vulnerability exists due to cross-site scripting in editableTable.twig when rendering table fields with the html column type. A remote user can modify a field configuration to include a malicious payload to execute arbitrary JavaScript in another user's browser.
Exploitation requires an administrator account, allowAdminChanges to be enabled in production, and another user to view a page containing the malicious table field.
How to mitigate CVE-2026-27126
Install security update from vendor's website.