CVE-2022-21649

Convos is an open source multi-user chat that runs in a web browser. Characters starting with "https://" in the chat window create an <a> 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.

• CWE-79
• CWE-79

• https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#Second-vulnerabilityBroken Link, Third Party Advisory
• https://github.com/convos-chat/convos/commit/86b2193de375005ba71d9dd53843562c6ac1847cPatch, Third Party Advisory
• https://github.com/convos-chat/convos/security/advisories/GHSA-xmpj-xwm3-vww7Patch, Third Party Advisory
• https://www.huntr.dev/bounties/4532a0ac-4e7c-4fcf-9fe3-630e132325c0/Exploit, Patch, Third Party Advisory
• https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#Second-vulnerabilityBroken Link, Third Party Advisory
• https://github.com/convos-chat/convos/commit/86b2193de375005ba71d9dd53843562c6ac1847cPatch, Third Party Advisory
• https://github.com/convos-chat/convos/security/advisories/GHSA-xmpj-xwm3-vww7Patch, Third Party Advisory
• https://www.huntr.dev/bounties/4532a0ac-4e7c-4fcf-9fe3-630e132325c0/Exploit, Patch, Third Party Advisory

Published

Jan 4, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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