CVSS: 8.5EPSS: 0%CPEs: 1EXPL: 0CVE-2025-31478 – Zulip Authentication Backend Configuration Bypass
https://notcve.org/view.php?id=CVE-2025-31478
16 Apr 2025 — Zulip is an open-source team collaboration tool. Zulip supports a configuration where account creation is limited solely by being able to authenticate with a single-sign on authentication backend, meaning the organization places no restrictions on email address domains or invitations being required to join, but has disabled the EmailAuthBackend that is used for email/password authentication. A bug in the Zulip server means that it is possible to create an account in such organizations, without having an acc... • https://github.com/zulip/zulip/security/advisories/GHSA-qxfv-j6vg-5rqc • CWE-287: Improper Authentication •
CVSS: 3.3EPSS: 0%CPEs: 1EXPL: 0CVE-2025-30369 – Zulip allows the deletion of Custom profile fields by administrators of a different organization
https://notcve.org/view.php?id=CVE-2025-30369
31 Mar 2025 — Zulip is an open-source team collaboration tool. The API for deleting an organization custom profile field is supposed to be restricted to organization administrators, but its handler failed to check that the field belongs to the same organization as the user. Therefore, an administrator of any organization was incorrectly allowed to delete custom profile fields belonging to a different organization. This is fixed in Zulip Server 10.1. • https://github.com/zulip/zulip/security/advisories/GHSA-fcgx-q63f-7gw4 • CWE-566: Authorization Bypass Through User-Controlled SQL Primary Key •
CVSS: 4.6EPSS: 0%CPEs: 1EXPL: 0CVE-2025-27149 – Zulip exports can leak private data
https://notcve.org/view.php?id=CVE-2025-27149
31 Mar 2025 — Zulip server provides an open-source team chat that helps teams stay productive and focused. Prior to 10.0, the data export to organization administrators feature in Zulip leaks private data. The collection of user-agent types identifying specific integrations or HTTP libraries (E.g., ZulipGitlabWebhook, okhttp, or PycURL) that have been used to access any organization on the server was incorrectly included in all three export types, regardless of if they were used to access the exported organization or not... • https://github.com/zulip/zulip/security/advisories/GHSA-358p-x39m-99mm • CWE-497: Exposure of Sensitive System Information to an Unauthorized Control Sphere •
CVSS: 6.9EPSS: 0%CPEs: 1EXPL: 0CVE-2024-56136 – /api/v1/jwt/fetch_api_key endpoint can leak if an email address has an account in Zulip server
https://notcve.org/view.php?id=CVE-2024-56136
16 Jan 2025 — 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. • https://github.com/zulip/zulip/commit/c6334a765b1e6d71760e4a3b32ae5b8367f2ed4d • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2024-27286 – Moving single messages from public to private streams leaves them accessible
https://notcve.org/view.php?id=CVE-2024-27286
20 Mar 2024 — Zulip is an open-source team collaboration. When a user moves a Zulip message, they have the option to move all messages in the topic, move only subsequent messages as well, or move just a single message. If the user chose to just move one message, and was moving it from a public stream to a private stream, Zulip would successfully move the message, -- but active users who did not have access to the private stream, but whose client had already received the message, would continue to see the message in the p... • https://github.com/zulip/zulip/commit/3db1733310ddd944c2e690ba673232345c928eec • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 8.0EPSS: 0%CPEs: 2EXPL: 0CVE-2022-35962 – Crafted link in Zulip message can cause disclosure of credentials
https://notcve.org/view.php?id=CVE-2022-35962
29 Aug 2022 — Zulip is an open source team chat and Zulip Mobile is an app for iOS and Andriod users. In Zulip Mobile through version 27.189, a crafted link in a message sent by an authenticated user could lead to credential disclosure if a user follows the link. A patch was released in version 27.190. Zulip es un equipo de chat de código abierto y Zulip Mobile es una aplicación para usuarios de iOS y Android. En Zulip Mobile versiones hasta 27.189, un enlace diseñado en un mensaje enviado por un usuario autenticado podí... • https://blog.zulip.com/2022/08/24/zulip-server-5-6-security-release • CWE-184: Incomplete List of Disallowed Inputs CWE-436: Interpretation Conflict CWE-697: Incorrect Comparison •