CVE-2022-31017

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    CVE-2022-31017

    Published: 25 Jun 2022Last Modified: 12 Aug 2026

    Summary: Expression Always True vulnerability in Zulip Server

    Details: Zulip is an open-source team collaboration tool. Versions 2.1.0 through and including 5.2 are vulnerable to a logic error. A stream configured as private with protected history, where new subscribers should not be allowed to see messages sent before they were subscribed, when edited causes the server to incorrectly send an API event that includes the edited message to all of the stream’s current subscribers. This API event is ignored by official clients, but can be observed by using a modified client or the browser’s developer tools. This bug will be fixed in Zulip Server 5.3. There are no known workarounds.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31017.json, https://github.com/zulip/zulip/security/advisories/GHSA-m5j3-jp59-6f3q, https://nvd.nist.gov/vuln/detail/CVE-2022-31017

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 03a3ae8b61bd44bb1be06c9af04eeb607fa94d8f
    Fixed -3c7fdf8a82004627afb21185a2066f18522273bb

    Affected versions

    5.2

    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-2022-31017 | CVE-DB