CVE-2025-52559

Published July 2nd, 2025

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CVSS v3

6.8

MEDIUM

CVSS v2

N/A

Affected

PROJECT

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/.

zulip/zulip

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

GitHub

25.4K