SB2026041435 - Improper access control in October CMS
Published: April 14, 2026
Security Bulletin ID
SB2026041435
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper access control (CVE-ID: CVE-2024-51991)
The vulnerability allows a remote user to bypass SVG sanitization protections.
The vulnerability exists due to improper access control in the media manager rename functionality when renaming a previously uploaded file to the .svg extension. A remote user can upload a file with a permitted extension and later rename it to .svg to bypass SVG sanitization protections.
Only instances with the media.clean_vectors configuration enabled are vulnerable, and user interaction from another trusted user is required.
Remediation
Install update from vendor's website.