CVE-2026-90561
High
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.
SeverityHigh
CVSS8.7
Exploit probability—
Product
Strapi
PublishedSep 13, 2026
First seenSep 13, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- strapi strapi5.48.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| strapi strapi | 4.0.0 ≤ v ≤ 4.26.2, 5.0.0 ≤ v < 5.48.1 | 5.48.1 |
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