CVE-2022-21650
High
Description
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.
SeverityHigh
CVSS7.6
Exploit probability—
ProductConvos
PublishedJan 4, 2022
First seenJan 4, 2022
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- convos convos6.52 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| convos convos | 6.48 ≤ v < 6.52 | 6.52 |
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