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CVE

CVE-2026-90561

Strapi 4.x through 4.26.2 and 5.x before 5.48.1 Stored XSS via WYSIWYG
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CVE

CVE-2026-90561

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90561.json, https://nvd.nist.gov/vuln/detail/CVE-2026-90561, https://www.vulncheck.com/advisories/strapi-4-x-through-4.26.2-and-5-x-before-5.48.1-stored-xss-via-wysiwyg, https://github.com/strapi/strapi/issues/26857, https://github.com/strapi/strapi/commit/875752612c30f951546904a29469e51e17e0ac37, https://github.com/strapi/strapi, https://github.com/strapi/strapi/blob/v5.46.0/packages/core/content-manager/admin/src/pages/EditView/components/FormInputs/Wysiwyg/PreviewWysiwyg.tsx

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.0043%
EPSS Percentile
0.35221%
Introduced Version
ce84fada19d58a7dfbdd553035e6558f8befcba4
Fix Available
b1e707d60def66aa840ad29db1a15f2ca574c154

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