Cross-site Scripting (XSS) - Stored in convos-chat/convos
Valid
Reported on
Dec 28th 2021
Description
The 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 .html extension. This causes Stored XSS. Also, after uploading a file, it does not log in, and XSS occurs even if you connect.
Proof of Concept
Username : whwjddnjs142@gmail.com
Password : qwer12211@
1. Open the https://demo.convos.chat/login and Login as to above account
2. Go to https://demo.convos.chat/chat/irc-demo-irc-convos/<chat room name>
3. File Upload a html file
4. When you upload a file, an upload link is created in the comment form.
5. Please connect after attaching ".html" after the link
Video : https://www.youtube.com/watch?v=AfrsOY2S0Nc
Impact
Through this vulnerability, an attacker is capable to execute malicious scripts.
We are processing your report and will contact the
convos-chat/convos
team within 24 hours.
2 years ago
Pocas modified the report
2 years ago
We have contacted a member of the
convos-chat/convos
team and are waiting to hear back
2 years ago
The fix bounty has been dropped
This vulnerability will not receive a CVE
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