CVE-2024-56136

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-56136
Zulip server provides an open-source team chat that helps teams stay productive and focused. Zulip Server 7.0 and above are vulnerable to an information disclose attack, where, if a Zulip server is hosting multiple organizations, an unauthenticated user can make a request and determine if an email address is in use by a user. Zulip Server 9.4 resolves the issue, as does the `main` branch of Zulip Server. Users are advised to upgrade. There are no known workarounds for this issue.

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/zulip/zulip/commit/c6334a765b1e6d71760e4a3b32ae5b8367f2ed4d Patch
https://github.com/zulip/zulip/security/advisories/GHSA-5xg8-xhfj-4hm6 Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*
History

27 Sep 2025, 00:16

Type Values Removed Values Added
CPE cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:* cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*
First Time Zulip zulip Server

27 Aug 2025, 02:19

Type Values Removed Values Added
CWE NVD-CWE-noinfo
References () https://github.com/zulip/zulip/commit/c6334a765b1e6d71760e4a3b32ae5b8367f2ed4d - () https://github.com/zulip/zulip/commit/c6334a765b1e6d71760e4a3b32ae5b8367f2ed4d - Patch
References () https://github.com/zulip/zulip/security/advisories/GHSA-5xg8-xhfj-4hm6 - () https://github.com/zulip/zulip/security/advisories/GHSA-5xg8-xhfj-4hm6 - Third Party Advisory
CPE cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*
Summary
  • (es) El servidor Zulip ofrece un chat de equipo de código abierto que ayuda a los equipos a mantenerse productivos y concentrados. Zulip Server 7.0 y versiones posteriores son vulnerables a un ataque de divulgación de información, en el que, si un servidor Zulip aloja varias organizaciones, un usuario no autenticado puede realizar una solicitud y determinar si un usuario está utilizando una dirección de correo electrónico. Zulip Server 9.4 resuelve el problema, al igual que la rama "principal" de Zulip Server. Se recomienda a los usuarios que actualicen. No existen workarounds conocidos para este problema.
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.3
First Time Zulip zulip
Zulip

16 Jan 2025, 20:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-01-16 20:15

Updated : 2025-09-27 00:16

NVD link : CVE-2024-56136

Mitre link : CVE-2024-56136

CVE.ORG link : CVE-2024-56136

JSON object : View

Products Affected

zulip

  • zulip_server
CWE
CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

NVD-CWE-noinfo