Zulip Server

6 CVEs product

Monthly

CVE-2026-24050 MEDIUM PATCH This Month

Stored cross-site scripting in Zulip Server versions 5.0 through 11.4 allows authenticated attackers to execute arbitrary JavaScript through malicious group or channel names when administrators interact with user profile management features. An attacker with the ability to create or modify groups/channels can inject payloads that execute in the context of an administrator's session, potentially compromising account security or sensitive data. A patch is available in version 11.5.

XSS Zulip Server
NVD GitHub
CVSS 3.1
5.4
EPSS
0.0%
CVE-2025-52559 MEDIUM PATCH This Month

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/.

XSS Debian Zulip Server
NVD GitHub
CVSS 3.1
6.8
EPSS
0.0%
CVE-2025-31478 HIGH This Week

Zulip is an open-source team collaboration tool. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Authentication Bypass Zulip Server
NVD GitHub
CVSS 3.1
8.2
EPSS
0.2%
CVE-2025-30369 LOW PATCH Monitor

Zulip is an open-source team collaboration tool. Rated low severity (CVSS 2.7), this vulnerability is remotely exploitable, low attack complexity.

Information Disclosure Zulip Server
NVD GitHub
CVSS 3.1
2.7
EPSS
0.2%
CVE-2025-27149 MEDIUM This Month

Zulip server provides an open-source team chat that helps teams stay productive and focused. Rated medium severity (CVSS 4.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Zulip Server
NVD GitHub
CVSS 4.0
4.6
EPSS
0.2%
CVE-2024-56136 MEDIUM PATCH This Month

Zulip server provides an open-source team chat that helps teams stay productive and focused. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.

Information Disclosure Zulip Server
NVD GitHub
CVSS 4.0
6.9
EPSS
0.1%
CVE-2026-24050
EPSS 0% CVSS 5.4
MEDIUM PATCH This Month

Stored cross-site scripting in Zulip Server versions 5.0 through 11.4 allows authenticated attackers to execute arbitrary JavaScript through malicious group or channel names when administrators interact with user profile management features. An attacker with the ability to create or modify groups/channels can inject payloads that execute in the context of an administrator's session, potentially compromising account security or sensitive data. A patch is available in version 11.5.

XSS Zulip Server
NVD GitHub
CVE-2025-52559
EPSS 0% CVSS 6.8
MEDIUM PATCH This Month

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/.

XSS Debian Zulip Server
NVD GitHub
CVE-2025-31478
EPSS 0% CVSS 8.2
HIGH This Week

Zulip is an open-source team collaboration tool. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Authentication Bypass Zulip Server
NVD GitHub
CVE-2025-30369
EPSS 0% CVSS 2.7
LOW PATCH Monitor

Zulip is an open-source team collaboration tool. Rated low severity (CVSS 2.7), this vulnerability is remotely exploitable, low attack complexity.

Information Disclosure Zulip Server
NVD GitHub
CVE-2025-27149
EPSS 0% CVSS 4.6
MEDIUM This Month

Zulip server provides an open-source team chat that helps teams stay productive and focused. Rated medium severity (CVSS 4.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Zulip Server
NVD GitHub
CVE-2024-56136
EPSS 0% CVSS 6.9
MEDIUM PATCH This Month

Zulip server provides an open-source team chat that helps teams stay productive and focused. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.

Information Disclosure Zulip Server
NVD GitHub

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