CVE-2022-21650: Convos

Medium severity, CVSS 5.4. EPSS: 0.8% chance of exploitation in the next 30 days.

Convos is an open source multi-user chat that runs in a web browser. You can't use SVG extension in Convos' chat window, but you can upload a file with an .html extension. By uploading an SVG file with an html extension the upload filter can be bypassed. This causes Stored XSS. Also, after uploading a file the XSS attack is triggered upon a user viewing the file. Through this vulnerability, an attacker is capable to execute malicious scripts. Users are advised to update as soon as possible.

Affected products

• Convos Convos: from 6.48, before 6.52 (fixed in 6.52)

Published 2022-01-04. Last modified 2026-06-17.