CVE-2025-52559 — MEDIUM (6.8)

Q: How severe is CVE-2025-52559?

CVE-2025-52559 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2025-52559?

Check the references section above for vendor advisories and patch information. Affected products include: Zulip Zulip Server.

Vulnerability 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 Score

6.8

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Zulip	Zulip Server	>= 2.0.1, < 10.4

Related Weaknesses (CWE)

CWE-79

References

FAQ

What is CVE-2025-52559?

CVE-2025-52559 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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 ...

How severe is CVE-2025-52559?

CVE-2025-52559 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-52559?

Check the references section above for vendor advisories and patch information. Affected products include: Zulip Zulip Server.