---
id: CVE-2026-90561
title: >-
  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
summary: >-
  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 m…
severity: high
cvss: 8.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
vendor: strapi
product: strapi
affected:
  - strapi >= 4.0.0 <= 4.26.2
  - strapi >= 5.0.0 < 5.48.1
published: '2026-09-13'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:08:22.573'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90561'
references:
  - url: 'https://github.com/strapi/strapi'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/strapi/strapi/blob/v5.46.0/packages/core/content-manager/admin/src/pages/EditView/components/FormInputs/Wysiwyg/PreviewWysiwyg.tsx
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/strapi/strapi/commit/875752612c30f951546904a29469e51e17e0ac37
    label: disclosure@vulncheck.com
  - url: 'https://github.com/strapi/strapi/issues/26857'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/strapi-4-x-through-4.26.2-and-5-x-before-5.48.1-stored-xss-via-wysiwyg
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.0043
epssPercentile: 0.34606
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-18T17:13:12.927986Z'
ingestedAt: '2026-09-14T15:23:07.471Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.