CVE-2022-23656

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    CVE-2022-23656

    Published: 2 Mar 2022Last Modified: 12 Aug 2026

    Summary: Cross-site scripting vulnerability in Zulip Server

    Details: Zulip is an open source team chat app. The `main` development branch of Zulip Server from June 2021 and later is vulnerable to a cross-site scripting vulnerability on the recent topics page. An attacker could maliciously craft a full name for their account and send messages to a topic with several participants; a victim who then opens an overflow tooltip including this full name on the recent topics page could trigger execution of JavaScript code controlled by the attacker. Users running a Zulip server from the main branch should upgrade from main (2022-03-01 or later) again to deploy this fix.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/23xxx/CVE-2022-23656.json, https://github.com/zulip/zulip/security/advisories/GHSA-fc77-h3jc-6mfv, https://nvd.nist.gov/vuln/detail/CVE-2022-23656, https://github.com/zulip/zulip/commit/e090027adcbf62737d5b1f83a9618a9500a49321

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -e090027adcbf62737d5b1f83a9618a9500a49321

    Affected versions

    shared-0.0.6
    shared-0.0.5
    shared-0.0.4
    shared-0.0.3
    shared-0.0.2
    shared-0.0.1

    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-2022-23656 | CVE-DB