CVE-2025-52559

Description

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/.

Reserved 2025-06-18 | Published 2025-07-02 | Updated 2025-07-02 | Assigner GitHub_M

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

>= 2.0.0-rc1, < 10.4
affected

References

github.com/.../zulip/security/advisories/GHSA-vgf2-vw4r-m663

github.com/...ommit/175ec1f365b0db982d6eac9019701cbf6e8bc2f2

github.com/...ommit/1a8429e338ff53bdcc4b42e7e71b6fffdd84fcd1

github.com/...ommit/6608c8777254e73a4b540e5e1c4af92e680a55fc

cve.org (CVE-2025-52559)

nvd.nist.gov (CVE-2025-52559)

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