Description
manageuser.php in Collabtive before 0.7.6 allows remote authenticated users, and possibly unauthenticated attackers, to bypass intended access restrictions and upload and execute arbitrary files by uploading an avatar file with an accepted Content-Type such as image/jpeg, then accessing it via a direct request to the file in files/standard/avatar.
Remediation
References
Related Vulnerabilities
Drupal Core 8.5.x Cross-Site Scripting (8.5.0 - 8.5.13)
Craft CMS Weak Password Recovery Mechanism for Forgotten Password Vulnerability (CVE-2017-8385)
Oracle JRE CVE-2012-1541 Vulnerability (CVE-2012-1541)
WordPress Plugin WP Selected Text Sharer Multiple Vulnerabilities (1.0)
WordPress Plugin WP Activity Log Cross-Site Scripting (2.4.3)