High severity8.7NVD Advisory· Published Sep 13, 2026
CVE-2026-90561
CVE-2026-90561
Description
Strapi versions 4.x through 4.26.2 and 5.x before 5.48.1 contain a stored cross-site scripting vulnerability in the content manager WYSIWYG preview component that fails to strip script tags from rich text. An Author-role user can store malicious script tags in rich text fields that execute in an Editor or Super Admin's session when the preview pane is expanded, enabling account takeover.
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Affected products
2Patches
Vulnerability mechanics
References
4- github.com/strapi/strapi/blob/v5.46.0/packages/core/content-manager/admin/src/pages/EditView/components/FormInputs/Wysiwyg/PreviewWysiwyg.tsxnvd
- github.com/strapi/strapi/commit/875752612c30f951546904a29469e51e17e0ac37nvd
- github.com/strapi/strapi/issues/26857nvd
- www.vulncheck.com/advisories/strapi-4-x-through-4.26.2-and-5-x-before-5.48.1-stored-xss-via-wysiwygnvd
News mentions
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