Project:
Date:
2026-July-01
Security risk:
Vulnerability:
Improper validation
Affected versions:
<1.4.2 || >=1.5.0 <1.5.2 || >=1.6.0 <1.6.1 || >=1.7.0 <1.7.1
CVE IDs:
CVE-2026-58588
Description:
The Canvas module allow you to upload image files via a custom API.
The validation rules check the file extension of the uploaded file but not the file MIME type. This may allow a malicious user to upload a file that is not an image.
Certain web-server configurations may serve the uploaded file with its actual MIME type rather than an image type. This may lead to cross-site scripting (XSS) or other unexpected behavior.
Solution:
Reported By:
Coordinated By:
- Juraj Nemec (poker10) of the Drupal Security Team
