CVEs-PoC/2022/CVE-2022-21649.md

CVE-2022-21649

Description

Convos is an open source multi-user chat that runs in a web browser. Characters starting with "https://" in the chat window create an tag. Stored XSS vulnerability using onfocus and autofocus occurs because escaping exists for "<" or ">" but escaping for double quotes does not exist. Through this vulnerability, an attacker is capable to execute malicious scripts. Users are advised to update as soon as possible.

POC

Reference

• https://www.huntr.dev/bounties/4532a0ac-4e7c-4fcf-9fe3-630e132325c0/

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/OpenGitLab/Bug-Storage