VULNERABILITY INTELLIGENCE
CVE-2022-21649
CVSS score7.6 HIGH
EPSS probability0.96%
CISA KEVNot currently listed
Published2022-01-04
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
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 <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.
Weakness classification
- security-advisories@github.com: CWE-79
- nvd@nist.gov: CWE-79
Primary references
- security-advisories@github.com — Broken Link, Third Party Advisory
- security-advisories@github.com — Patch, Third Party Advisory
- security-advisories@github.com — Patch, Third Party Advisory
- security-advisories@github.com — Exploit, Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Patch, Third Party Advisory