Arbitrary File Upload Affecting @strapi/upload package, versions <5.33.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published14 May 2026
- disclosed14 May 2026
- creditkaminuma, arkmarta
Introduced: 14 May 2026
NewCVE-2026-22707 (opens in a new tab)How to fix?
Upgrade @strapi/upload to version 5.33.3 or higher.
Overview
@strapi/upload is a Makes it easy to upload images and files to your Strapi Application.
Affected versions of this package are vulnerable to Arbitrary File Upload via the Content API uploadFiles and replaceFile handlers, which bypass administrator-configured MIME type restrictions. An attacker can upload files with disallowed types, such as HTML or SVG, by exploiting insufficient enforcement of security checks. This can lead to the execution of malicious scripts in the admin origin if an administrator opens the uploaded file, potentially resulting in session hijacking and unauthorized administrative actions.