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    CVE-2025-52559

    Zulip is an open-source team chat application. From versions 2.0.0-rc1 to before 10.4 in Zulip Server, the /digest/ URL of a server shows a preview of what the email weekly digest would contain. This URL, though not the digest itself, contains a cross-site scripting (XSS) vulnerability in both topic names and channel names. This issue has been fixed in Zulip Server 10.4. A workaround for this issue involves denying access to /digest/.

    Published:Jul 2, 2025
    Last Modified:Oct 2, 2025
    EPS:Jul 2, 2025
    EPSS Score:0.00045
    CVSS Score:6.8

    Affected Products

    Vendor
    Zulip
    Product
    Zulip
    Vendor
    Zulip
    Product
    Zulip Server

    Exploits

    No exploit reference

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    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