Strapi 4.x through 4.26.2 and 5.x before 5.48.1 Stored XSS via WYSIWYG
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.
CVE-2026-90561
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-90561
strapi
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "strapi",
"product": "strapi",
"versions": [
{
"status": "affected",
"version": "4.0.0",
"versionType": "semver",
"lessThanOrEqual": "4.26.2"
},
{
"status": "affected",
"version": "5.0.0",
"lessThan": "5.48.1",
"versionType": "semver"
}
],
"packageURL": "pkg:npm/%40strapi/strapi",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-90561
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #1625 · Revision 1
- Added to Heist Feed
- Publisher date