CVE-2022-21649

    Dashboard / Vulnerabilities / CVE-2022-21649

    CVE-2022-21649

    Published: 4 Jan 2022Last Modified: 12 Aug 2026

    Summary: Stored XSS via attribute in convos

    Details: 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.

    References: https://www.huntr.dev/bounties/4532a0ac-4e7c-4fcf-9fe3-630e132325c0/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21649.json, https://github.com/convos-chat/convos/security/advisories/GHSA-xmpj-xwm3-vww7, https://nvd.nist.gov/vuln/detail/CVE-2022-21649, https://github.com/convos-chat/convos/commit/86b2193de375005ba71d9dd53843562c6ac1847c, https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#Second-vulnerability

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 02ed03da300bcc1c2a3fea6941b5952c666d8deb
    Fixed -794ab7d2273327829230bfa96b5b3126b0547bb1

    Affected versions

    v6.51

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2022-21649 | CVE-DB