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/.
| Software | From | Fixed in |
|---|---|---|
| zulip / zulip_server | 2.0.1 | 10.4 |
| zulip / zulip_server | 2.0.0-rc1 | 2.0.0-rc1.x |
- https://github.com/zulip/zulip/commit/175ec1f365b0db982d6eac9019701cbf6e8bc2f2
- https://github.com/zulip/zulip/commit/1a8429e338ff53bdcc4b42e7e71b6fffdd84fcd1
- https://github.com/zulip/zulip/commit/6608c8777254e73a4b540e5e1c4af92e680a55fc
- https://github.com/zulip/zulip/security/advisories/GHSA-vgf2-vw4r-m663
Deep Security Visibility Without the Complexity
SynScan provides clear, real-time security insights so you can monitor your attack surface, spot risks early, and act fast—without extra complexity.
- No setup fees
- 5-min deployment
- Cancel anytime