Zulip 関連製品全体の CVE とセキュリティ脆弱性情報を集約し、CVSS、EPSS、公開日、脆弱性情報データを掲載しています。
一般的な弱点パターンには vendor risk cross-site scripting、パス処理の欠陥、vendor risk open redirect, and バッファオーバーフロー があり、vendor surface production workloads and vendor surface software deployment の利用場面で ファイル上書き、アプリケーションクラッシュ, and vendor impact memory corruption などのリスクが生じる可能性があります。
掲載データは公開脆弱性情報とセキュリティ公告に基づき、過去の暴露面と修補優先度の評価に利用できます。
| CVE | 概要 | ソース | CVSS 最大値 | EPSS（%） | 公開 | 更新 |
|---|---|---|---|---|---|---|
| CVE-2026-40300 | Zulip is an open-source team collaboration tool. Prior to 12.0, With message_edit_history_visibility_policy set to "moves", /api/v1/messages/{id}/history still returns historical content values, allowing low-privilege users to recover text that was edited away from other users' messages. This vulnerability is fixed in 12.0. | [email protected] | 6.0 | 0.04% | 2026-05-12 | 2026-05-13 |
| CVE-2026-26058 | Zulip is an open-source team collaboration tool. From version 1.4.0 to before version 11.6, ./manage.py import reads arbitrary files from the server filesystem via path traversal in uploads/records.json. A crafted export tarball causes the server to copy any file the zulip user can read into the uploads directory during import. This issue has been patched in version 11.6. | [email protected] | 6.1 | 0.01% | 2026-04-03 | 2026-04-22 |
| CVE-2026-25742 | Zulip is an open-source team collaboration tool. Prior to version 11.6, Zulip is an open-source team collaboration tool. From version 1.4.0 to before version 11.6, even after spectator access (enable_spectator_access / WEB_PUBLIC_STREAMS_ENABLED) is disabled, attachments originating from web-public streams can still be retrieved anonymously. As a result, file contents remain accessible even after public access is intended to be disabled. Similarly, even after spectator access is disabled, the /u | [email protected] | 5.3 | 0.06% | 2026-04-03 | 2026-04-13 |
| CVE-2026-24050 | Zulip is an open-source team collaboration tool. From 5.0 to before 11.5, some administrative actions on the user profile were susceptible to stored XSS in group names or channel names. Exploiting these vulnerabilities required the user explicitly interacting with the problematic object. This vulnerability is fixed in 11.5. | [email protected] | 1.1 | 0.02% | 2026-02-06 | 2026-02-23 |
| CVE-2025-52559 | 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/. | [email protected] | 6.8 | 0.18% | 2025-07-02 | 2025-10-02 |
| CVE-2025-47930 | Zulip is an open-source team chat application. Starting in version 10.0 and prior to version 10.3, the "Who can create public channels" access control mechanism can be circumvented by creating a private or web-public channel, and then changing the channel privacy to public. A similar technique works for creating private channels without permission, though such a process requires either the API or modifying the HTML, as we do mark the "private" radio button as disabled in such cases. Version 10.3 | [email protected] | 5.3 | 0.21% | 2025-05-16 | 2025-08-27 |
| CVE-2025-31478 | 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 h | [email protected] | 8.2 | 0.51% | 2025-04-16 | 2026-01-23 |
| CVE-2025-30369 | 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. | [email protected] | 2.7 | 0.20% | 2025-03-31 | 2025-09-27 |
| CVE-2025-30368 | 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. | [email protected] | 2.7 | 0.26% | 2025-03-31 | 2025-08-27 |
| CVE-2025-27149 | 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 organiz | [email protected] | 4.6 | 0.24% | 2025-03-31 | 2025-09-27 |
| 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. | [email protected] | 6.9 | 0.20% | 2025-01-16 | 2025-09-27 |
| CVE-2024-36612 | Zulip from 8.0 to 8.3 contains a memory leak vulnerability in the handling of popovers. | [email protected] | 7.5 | 0.12% | 2024-11-29 | 2025-04-09 |
| CVE-2024-36624 | Zulip 8.3 is vulnerable to Cross Site Scripting (XSS) via the construct_copy_div function in copy_and_paste.js. | [email protected] | 5.4 | 0.09% | 2024-11-29 | 2025-11-25 |
| CVE-2024-36625 | Zulip 8.3 is vulnerable to Cross Site Scripting (XSS) via the replace_emoji_with_text function in ui_util.ts. | [email protected] | 5.4 | 0.09% | 2024-11-29 | 2025-11-25 |
| CVE-2024-27286 | Zulip is an open-source team collaboration tool. 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 th | [email protected] | 6.5 | 0.06% | 2024-03-20 | 2025-09-03 |
| CVE-2024-21630 | 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 | [email protected] | 4.3 | 0.11% | 2024-01-25 | 2024-11-21 |
| CVE-2023-47642 | 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 stre | [email protected] | 4.3 | 0.38% | 2023-11-16 | 2024-11-21 |
| CVE-2023-32678 | 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 adm | [email protected] | 6.5 | 0.03% | 2023-08-25 | 2024-11-21 |
| CVE-2023-33186 | 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 toolt | [email protected] | 8.2 | 0.89% | 2023-05-30 | 2024-11-21 |
| CVE-2023-28623 | Zulip is an open-source team collaboration tool with unique topic-based threading. In the event that 1: `ZulipLDAPAuthBackend` and an external authentication backend (any aside of `ZulipLDAPAuthBackend` and `EmailAuthBackend`) are the only ones enabled in `AUTHENTICATION_BACKENDS` in `/etc/zulip/settings.py` and 2: The organization permissions don't require invitations to join. An attacker can create a new account in the organization with an arbitrary email address in their control that's not in | [email protected] | 6.5 | 0.21% | 2023-05-19 | 2024-11-21 |