CVE-2025-52559mediumCWE-79

Zulip XSS in digest preview URL

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.8epss 0.2%

exploitation probability

0.2%top 85% of all CVEs

observed exploitation

nono source reports it

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/.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N

Affected products

zulip · zulip

References

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