CVE-2026-90561

high

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 t…

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.

CVSS

8.7

8.7 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)

Timeline (UTC)

Published: 2026-09-13 11:17

Modified: 2026-09-24 21:08

NVD status: Awaiting Analysis

Last synced 2 days ago

Verified against the source API 2026-10-27 06:52 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-79

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://github.com/strapi/strapi disclosure@vulncheck.com
https://github.com/strapi/strapi/blob/v5.46.0/packages/core/content-manager/admin/src/page... disclosure@vulncheck.com
https://github.com/strapi/strapi/commit/875752612c30f951546904a29469e51e17e0ac37 disclosure@vulncheck.com
https://github.com/strapi/strapi/issues/26857 disclosure@vulncheck.com
https://www.vulncheck.com/advisories/strapi-4-x-through-4.26.2-and-5-x-before-5.48.1-store... disclosure@vulncheck.com

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:52 UTC · record ↗

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