Shared Files <= 1.7.48 - Unauthenticated Stored Cross-Site Scripting via sanitize_file Function
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.2epss 0.3%
exploitation probability
0.3%top 76% of all CVEs
observed exploitation
nono source reports it
The Shared Files – Frontend File Upload Form & Secure File Sharing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via html File uploads in all versions up to, and including, 1.7.48 due to insufficient input sanitization and output escaping within the sanitize_file() function. This makes it possible for unauthenticated attackers to bypass the plugin’s MIME-only checks and inject arbitrary web scripts in pages that will execute whenever a user accesses the html file.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
References
https://github.com/anssilaitila/shared-files/blob/master/admin/class-sf-admin-allow-more-file-types.phphttps://plugins.trac.wordpress.org/changeset/3304053/https://wordpress.org/plugins/shared-files/#developershttps://www.wordfence.com/threat-intel/vulnerabilities/id/469a9c8a-0708-4c93-99d8-e9157a1f91f5?source=cve