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CVE-2025-52559

Zulip XSS in digest preview URL

Published: Jul 2, 2025Updated: Oct 2, 2025 Sources: CVE List NVDCWE-79
NVD MITRE
6.8CVSSMEDIUM
EPSS Score
0.2%
Top 86.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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/.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:CC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-79

Affected Products

zulip serverzulip
On-premWeb App
Enterprise Software / collaboration-groupware
zulipzulip
On-premWeb App
Enterprise Software / collaboration-groupware
zuliposs-projectEnterprise Softwareaka zulip

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/zulip/zulip/commit/175ec1f365b0db982d6eac9019701cbf6e8bc2f2
github.com
https://github.com/zulip/zulip/commit/1a8429e338ff53bdcc4b42e7e71b6fffdd84fcd1
github.com
https://github.com/zulip/zulip/commit/6608c8777254e73a4b540e5e1c4af92e680a55fc
github.com
and 1 more references View all →

Timeline

Published
Jul 2, 2025
Last Updated
Oct 2, 2025

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