CVE-2026-90561: Strapi 4.x through 4.26.2 and 5.x before 5.48.1 Stored XSS via WYSIWYG
High · CVSS 8.7 (CVSS 3.1)EPSS 0.43%, 37th percentilePublished Updated Assigner: VulnCheck
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.
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N · CWE-79
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
strapi: strapi
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/strapi/strapi (opens in new tab)
- github.com/strapi/strapi/blob/v5.46.0/packages/core/content-manager/admin/src/pa… (opens in new tab)
- github.com/strapi/strapi/commit/875752612c30f951546904a29469e51e17e0ac37 (opens in new tab)
- github.com/strapi/strapi/issues/26857 (opens in new tab)
- www.vulncheck.com/advisories/strapi-4-x-through-4.26.2-and-5-x-before-5.48.1-stored-xss… (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)