CVE-2026-56383

Medium

Description

Craft CMS contains a stored cross-site scripting (XSS) vulnerability in the editableTable.twig component when using the 'Row Heading' column type. The application fails to sanitize input within row heading default values, allowing an attacker with an administrator account (with allowAdminChanges enabled) to inject arbitrary JavaScript that executes when another user views a page containing the affected table field. Affected versions are >= 4.5.0-beta.1 through 4.16.18 and >= 5.0.0-RC1 through 5.8.22; fixed in 4.16.19 and 5.8.23.

SeverityMedium

CVSS4.8

Exploit probability—

ProductCraftcms/cms

PublishedJun 21, 2026

First seenJun 21, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

craftcms/cms4.16.19, 5.8.23 or later

Patches

github.com/craftcms/cms/commit/7b372de262b8d9d2ce859f32780c3715719b6f5a

Vendor advisories

github.com/craftcms/cms/security/advisories/GHSA-6j87-m5qx-9fqp

Affected products

Product	Affected versions	Fixed in
craftcms/cmsPackagist	4.5.0-beta.1 ≤ v < 4.16.19, 5.0.0-RC1 ≤ v < 5.8.23	4.16.19, 5.8.23

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