Identifier

CVE-2020-9309

Package Slug

packagist/silverstripe/mimevalidator

Vulnerability

Unrestricted Upload of File with Dangerous Type

Description

Silverstripe CMS can be susceptible to script execution from malicious upload contents under allowed file extensions (for example HTML code in a TXT file). When these files are stored as protected or draft files, the MIME detection can cause browsers to execute the file contents.

Affected Versions

All versions before 2.0.0

Solution

Upgrade to version 2.0.0 or above.

Last Modified

2020-07-28

source