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: 3.3EPSS: 0%CPEs: 1EXPL: 0CVE-2025-30368 – Zulip allows the deletion of organization by administrators of a different organization
https://notcve.org/view.php?id=CVE-2025-30368
31 Mar 2025 — Zulip is an open-source team collaboration tool. The API for deleting an organization export 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 an export of a different organization. This is fixed in Zulip Server 10.1. • https://github.com/zulip/zulip/commit/07dcee36b2a34d63429d7a706f880628cf3433df • 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: 4.3EPSS: 0%CPEs: 1EXPL: 0CVE-2025-25195 – Zulip events can leak private channel names
https://notcve.org/view.php?id=CVE-2025-25195
13 Feb 2025 — Zulip is an open source team chat application. A weekly cron job (added in 50256f48314250978f521ef439cafa704e056539) demotes channels to being "inactive" after they have not received traffic for 180 days. However, upon doing so, an event was sent to all users in the organization, not just users in the channel. This event contained the name of the private channel. Similarly, the same commit (50256f48314250978f521ef439cafa704e056539) added functionality to notify clients when channels stopped being "inactive.... • https://github.com/zulip/zulip/commit/50256f48314250978f521ef439cafa704e056539 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
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: 4.3EPSS: 0%CPEs: 2EXPL: 0CVE-2024-21630 – Zulip non-admins can invite new users to streams they would not otherwise be able to add existing users to
https://notcve.org/view.php?id=CVE-2024-21630
25 Jan 2024 — Zulip is an open-source team collaboration tool. A vulnerability in version 8.0 is similar to CVE-2023-32677, but applies to multi-use invitations, not single-use invitation links as in the prior CVE. Specifically, it applies when the installation has configured non-admins to be able to invite users and create multi-use invitations, and has also configured only admins to be able to invite users to streams. As in CVE-2023-32677, this does not let users invite new users to arbitrary streams, only to streams t... • https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf • CWE-862: Missing Authorization •
CVSS: 4.3EPSS: 0%CPEs: 1EXPL: 0CVE-2023-47642 – Stream description leaks to ex-subscribers in Zulip
https://notcve.org/view.php?id=CVE-2023-47642
16 Nov 2023 — Zulip is an open-source team collaboration tool. It was discovered by the Zulip development team that active users who had previously been subscribed to a stream incorrectly continued being able to use the Zulip API to access metadata for that stream. As a result, users who had been removed from a stream, but still had an account in the organization, could still view metadata for that stream (including the stream name, description, settings, and an email address used to send emails into the stream via the i... • https://github.com/zulip/zulip/commit/6336322d2f9bbccaacfc80cba83a3c62eefd5737 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 6.8EPSS: 0%CPEs: 1EXPL: 0CVE-2023-32678 – Zulip vulnerable to insufficient authorization check for edition/deletion of messages and topics in private streams by former subscribers
https://notcve.org/view.php?id=CVE-2023-32678
25 Aug 2023 — Zulip is an open-source team collaboration tool with topic-based threading that combines email and chat. Users who used to be subscribed to a private stream and have been removed from it since retain the ability to edit messages/topics, move messages to other streams, and delete messages that they used to have access to, if other relevant organization permissions allow these actions. For example, a user may be able to edit or delete their old messages they posted in such a private stream. An administrator w... • https://github.com/zulip/zulip/security/advisories/GHSA-q3wg-jm9p-35fj • CWE-285: Improper Authorization •
CVSS: 8.2EPSS: 0%CPEs: 2EXPL: 0CVE-2023-33186 – Cross-site scripting vulnerability in Zulip Server development branch via topic tooltip
https://notcve.org/view.php?id=CVE-2023-33186
30 May 2023 — Zulip is an open-source team collaboration tool with unique topic-based threading that combines the best of email and chat to make remote work productive and delightful. The main development branch of Zulip Server from May 2, 2023 and later, including beta versions 7.0-beta1 and 7.0-beta2, is vulnerable to a cross-site scripting vulnerability in tooltips on the message feed. An attacker who can send messages could maliciously craft a topic for the message, such that a victim who hovers the tooltip for that ... • https://github.com/zulip/zulip/commit/03cfb3d9fe61c975d133121ec31a7357f0c9e18f • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •