CVE-2026-27126: Craft CMS

Medium severity, CVSS 4.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, a stored Cross-site Scripting (XSS) vulnerability exists in the `editableTable.twig` component when using the `html` column type. The application fails to sanitize the input, allowing an attacker to execute arbitrary JavaScript when another user views a page with the malicious table field. In order to exploit the vulnerability, an attacker must have an administrator account, and `allowAdminChanges` must be enabled in production, which is against Craft's security recommendations. Versions 4.16.19 and 5.8.23 patch the issue.

Affected products

• Craft CMS Craft CMS: after 4.5.0, before 4.16.19 (fixed in 4.16.19); after 5.0.0, before 5.8.23 (fixed in 5.8.23); version 4.5.0 only; version 5.0.0 only

Published 2026-02-24. Last modified 2026-06-17.