CVE-2026-26188: Solspace Freeform

Medium severity, CVSS 5.4. EPSS: 0.4% chance of exploitation in the next 30 days.

Solspace Freeform plugin for Craft CMS 5.x is a super flexible form-building tool. An authenticated, low-privilege user (able to create/edit forms) can inject arbitrary HTML/JS into the Craft Control Panel (CP) builder and integrations views. User-controlled form labels and integration metadata are rendered with dangerouslySetInnerHTML without sanitization, leading to stored XSS that executes when any admin views the builder/integration screens. This vulnerability is fixed in 5.14.7.

Affected products

• Solspace Freeform: from 5.0.0, before 5.14.7 (fixed in 5.14.7)

Published 2026-02-12. Last modified 2026-06-17.