Search criteria
59 vulnerabilities by zulip
CVE-2025-52559 (GCVE-0-2025-52559)
Vulnerability from cvelistv5 – Published: 2025-07-02 19:31 – Updated: 2025-07-02 19:37
VLAI?
Summary
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/.
Severity ?
6.8 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2025-47930 (GCVE-0-2025-47930)
Vulnerability from cvelistv5 – Published: 2025-05-15 23:17 – Updated: 2025-05-16 13:19
VLAI?
Summary
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 contains a patch.
Severity ?
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2025-31478 (GCVE-0-2025-31478)
Vulnerability from cvelistv5 – Published: 2025-04-16 21:28 – Updated: 2025-04-17 13:18
VLAI?
Summary
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 account with the configured SSO authentication backend. This issue is patched in version 10.2. A workaround includes requiring invitations to join the organization prevents the vulnerability from being accessed.
Severity ?
8.2 (High)
CWE
- CWE-287 - Improper Authentication
Assigner
References
| URL | Tags | ||||
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|
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CVE-2025-30369 (GCVE-0-2025-30369)
Vulnerability from cvelistv5 – Published: 2025-03-31 16:32 – Updated: 2025-03-31 18:17
VLAI?
Summary
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.
Severity ?
CWE
- CWE-566 - Authorization Bypass Through User-Controlled SQL Primary Key
Assigner
References
| URL | Tags | ||||
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CVE-2025-30368 (GCVE-0-2025-30368)
Vulnerability from cvelistv5 – Published: 2025-03-31 16:26 – Updated: 2025-03-31 18:59
VLAI?
Summary
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.
Severity ?
CWE
- CWE-566 - Authorization Bypass Through User-Controlled SQL Primary Key
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2025-27149 (GCVE-0-2025-27149)
Vulnerability from cvelistv5 – Published: 2025-03-31 15:33 – Updated: 2025-03-31 18:36
VLAI?
Summary
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. The "public data" and "with consent" exports metadata including the titles of some topics in private channels which the administrator otherwise did not have access to, and none of the users consented to exporting and metadata for which users were in a group DM together. This vulnerability is fixed in 10.0.
Severity ?
CWE
- CWE-497 - Exposure of Sensitive System Information to an Unauthorized Control Sphere
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
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CVE-2025-25195 (GCVE-0-2025-25195)
Vulnerability from cvelistv5 – Published: 2025-02-13 21:47 – Updated: 2025-02-14 15:46
VLAI?
Summary
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." The first message sent to a private channel which had not previously had any messages for over 180 days (and were thus already marked "inactive") would leak an event to all users in the organization; this event also contained the name of the private channel. Commits 75be449d456d29fef27e9d1828bafa30174284b4 and a2a1a7f8d152296c8966f1380872c0ac69e5c87e fixed the issue. This vulnerability only existed in `main`, and was not part of any published versions.
Severity ?
4.3 (Medium)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
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CVE-2024-56136 (GCVE-0-2024-56136)
Vulnerability from cvelistv5 – Published: 2025-01-16 19:25 – Updated: 2025-02-06 21:29
VLAI?
Summary
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.
Severity ?
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
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CVE-2024-36625 (GCVE-0-2024-36625)
Vulnerability from cvelistv5 – Published: 2024-11-29 00:00 – Updated: 2024-11-29 17:09
VLAI?
Summary
Zulip 8.3 is vulnerable to Cross Site Scripting (XSS) via the replace_emoji_with_text function in ui_util.ts.
Severity ?
6.1 (Medium)
CWE
- n/a
Assigner
References
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CVE-2024-36624 (GCVE-0-2024-36624)
Vulnerability from cvelistv5 – Published: 2024-11-29 00:00 – Updated: 2024-11-29 18:17
VLAI?
Summary
Zulip 8.3 is vulnerable to Cross Site Scripting (XSS) via the construct_copy_div function in copy_and_paste.js.
Severity ?
6.1 (Medium)
CWE
- n/a
Assigner
References
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CVE-2024-36612 (GCVE-0-2024-36612)
Vulnerability from cvelistv5 – Published: 2024-11-29 00:00 – Updated: 2024-12-02 16:35
VLAI?
Summary
Zulip from 8.0 to 8.3 contains a memory leak vulnerability in the handling of popovers.
Severity ?
7.5 (High)
CWE
- n/a
Assigner
References
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CVE-2024-27286 (GCVE-0-2024-27286)
Vulnerability from cvelistv5 – Published: 2024-03-20 19:35 – Updated: 2025-03-31 16:30
VLAI?
Summary
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 the message in the public stream until they reloaded their client. Additionally, Zulip did not remove view permissions on the message from recently-active users, allowing the message to show up in the "All messages" view or in search results, but not in "Inbox" or "Recent conversations" views. While the bug has been present since moving messages between streams was first introduced in version 3.0, this option became much more common starting in Zulip 8.0, when the default option in the picker for moving the very last message in a conversation was changed. This issue is fixed in Zulip Server 8.3. No known workarounds are available.
Severity ?
6.5 (Medium)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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CVE-2024-21630 (GCVE-0-2024-21630)
Vulnerability from cvelistv5 – Published: 2024-01-25 19:30 – Updated: 2025-05-29 15:19
VLAI?
Summary
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 that the inviter can already see. Version 8.1 fixes this issue. As a workaround, administrators can limit sending of invitations down to users who also have the permission to add users to streams.
Severity ?
4.3 (Medium)
CWE
- CWE-862 - Missing Authorization
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
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CVE-2023-47642 (GCVE-0-2023-47642)
Vulnerability from cvelistv5 – Published: 2023-11-16 21:41 – Updated: 2024-08-29 14:49
VLAI?
Summary
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 incoming email integration). This potentially allowed users to see changes to a stream’s metadata after they had lost access to the stream. This vulnerability has been addressed in version 7.5 and all users are advised to upgrade. There are no known workarounds for this issue.
Severity ?
4.3 (Medium)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
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CVE-2023-32678 (GCVE-0-2023-32678)
Vulnerability from cvelistv5 – Published: 2023-08-25 20:04 – Updated: 2024-09-30 18:17
VLAI?
Summary
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 will be able to delete old messages (that they had access to) from the private stream. This issue was fixed in Zulip Server version 7.3.
Severity ?
6.5 (Medium)
CWE
- CWE-285 - Improper Authorization
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
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CVE-2023-33186 (GCVE-0-2023-33186)
Vulnerability from cvelistv5 – Published: 2023-05-30 05:31 – Updated: 2025-01-10 19:47
VLAI?
Summary
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 topic in their message feed triggers execution of JavaScript code controlled by the attacker.
Severity ?
8.2 (High)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2023-28623 (GCVE-0-2023-28623)
Vulnerability from cvelistv5 – Published: 2023-05-19 21:04 – Updated: 2025-02-12 17:01
VLAI?
Summary
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 the organization's LDAP directory. The impact is limited to installations which have this specific combination of authentication backends as described above in addition to having `Invitations are required for joining this organization` organization permission disabled. This issue has been addressed in version 6.2. Users are advised to upgrade. Users unable to upgrade may enable the `Invitations are required for joining this organization` organization permission to prevent this issue.
Severity ?
6.5 (Medium)
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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CVE-2023-32677 (GCVE-0-2023-32677)
Vulnerability from cvelistv5 – Published: 2023-05-19 20:44 – Updated: 2025-02-12 16:37
VLAI?
Summary
Zulip is an open-source team collaboration tool with unique topic-based threading. Zulip administrators can configure Zulip to limit who can add users to streams, and separately to limit who can invite users to the organization. In Zulip Server 6.1 and below, the UI which allows a user to invite a new user also allows them to set the streams that the new user is invited to -- even if the inviting user would not have permissions to add an existing user to streams. While such a configuration is likely rare in practice, the behavior does violate security-related controls. This does not let a user invite new users to streams they cannot see, or would not be able to add users to if they had that general permission. This issue has been addressed in version 6.2. Users are advised to upgrade. Users unable to upgrade may limit sending of invitations down to users who also have the permission to add users to streams.
Severity ?
CWE
- CWE-862 - Missing Authorization
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2023-22735 (GCVE-0-2023-22735)
Vulnerability from cvelistv5 – Published: 2023-02-07 18:48 – Updated: 2025-03-10 21:15
VLAI?
Summary
Zulip is an open-source team collaboration tool. In versions of zulip prior to commit `2f6c5a8` but after commit `04cf68b` users could upload files with arbitrary `Content-Type` which would be served from the Zulip hostname with `Content-Disposition: inline` and no `Content-Security-Policy` header, allowing them to trick other users into executing arbitrary Javascript in the context of the Zulip application. Among other things, this enables session theft. Only deployments which use the S3 storage (not the local-disk storage) are affected, and only deployments which deployed commit 04cf68b45ebb5c03247a0d6453e35ffc175d55da, which has only been in `main`, not any numbered release. Users affected should upgrade from main again to deploy this fix. Switching from S3 storage to the local-disk storage would nominally mitigate this, but is likely more involved than upgrading to the latest `main` which addresses the issue.
Severity ?
4.4 (Medium)
CWE
- CWE-436 - Interpretation Conflict
Assigner
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CVE-2022-41914 (GCVE-0-2022-41914)
Vulnerability from cvelistv5 – Published: 2022-11-16 00:00 – Updated: 2025-04-23 16:36
VLAI?
Summary
Zulip is an open-source team collaboration tool. For organizations with System for Cross-domain Identity Management(SCIM) account management enabled, Zulip Server 5.0 through 5.6 checked the SCIM bearer token using a comparator that did not run in constant time. Therefore, it might theoretically be possible for an attacker to infer the value of the token by performing a sophisticated timing analysis on a large number of failing requests. If successful, this would allow the attacker to impersonate the SCIM client for its abilities to read and update user accounts in the Zulip organization. Organizations where SCIM account management has not been enabled are not affected.
Severity ?
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
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CVE-2022-36048 (GCVE-0-2022-36048)
Vulnerability from cvelistv5 – Published: 2022-08-31 19:15 – Updated: 2025-04-23 17:46
VLAI?
Summary
Zulip is an open-source team collaboration tool with topic-based threading that combines email and chat. When displaying messages with embedded remote images, Zulip normally loads the image preview via a go-camo proxy server. However, an attacker who can send messages could include a crafted URL that tricks the server into embedding a remote image reference directly. This could allow the attacker to infer the viewer’s IP address and browser fingerprinting information. This vulnerability is fixed in Zulip Server 5.6. Zulip organizations with image and link previews [disabled](https://zulip.com/help/allow-image-link-previews) are not affected.
Severity ?
4.3 (Medium)
CWE
- CWE-436 - Interpretation Conflict
Assigner
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CVE-2022-35962 (GCVE-0-2022-35962)
Vulnerability from cvelistv5 – Published: 2022-08-29 14:50 – Updated: 2025-04-23 17:47
VLAI?
Summary
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.
Severity ?
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zulip | zulip-mobile |
Affected:
< 27.190
|
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CVE-2016-4427 (GCVE-0-2016-4427)
Vulnerability from cvelistv5 – Published: 2022-07-28 16:32 – Updated: 2024-08-06 00:32
VLAI?
Summary
In zulip before 1.3.12, deactivated users could access messages if SSO was enabled.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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CVE-2016-4426 (GCVE-0-2016-4426)
Vulnerability from cvelistv5 – Published: 2022-07-28 16:31 – Updated: 2024-08-06 00:32
VLAI?
Summary
In zulip before 1.3.12, bot API keys were accessible to other users in the same realm.
Severity ?
No CVSS data available.
CWE
Assigner
References
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CVE-2022-31168 (GCVE-0-2022-31168)
Vulnerability from cvelistv5 – Published: 2022-07-22 13:05 – Updated: 2025-04-23 17:57
VLAI?
Summary
Zulip is an open source team chat tool. Due to an incorrect authorization check in Zulip Server 5.4 and earlier, a member of an organization could craft an API call that grants organization administrator privileges to one of their bots. The vulnerability is fixed in Zulip Server 5.5. Members who don’t own any bots, and lack permission to create them, can’t exploit the vulnerability. As a workaround for the vulnerability, an organization administrator can restrict the `Who can create bots` permission to administrators only, and change the ownership of existing bots.
Severity ?
5.4 (Medium)
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2022-31134 (GCVE-0-2022-31134)
Vulnerability from cvelistv5 – Published: 2022-07-12 20:35 – Updated: 2025-04-23 18:02
VLAI?
Summary
Zulip is an open-source team collaboration tool. Zulip Server versions 2.1.0 above have a user interface tool, accessible only to server owners and server administrators, which provides a way to download a "public data" export. While this export is only accessible to administrators, in many configurations server administrators are not expected to have access to private messages and private streams. However, the "public data" export which administrators could generate contained the attachment contents for all attachments, even those from private messages and streams. Zulip Server version 5.4 contains a patch for this issue.
Severity ?
4.9 (Medium)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
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CVE-2022-31017 (GCVE-0-2022-31017)
Vulnerability from cvelistv5 – Published: 2022-06-25 08:15 – Updated: 2025-04-23 18:08
VLAI?
Summary
Zulip is an open-source team collaboration tool. Versions 2.1.0 through and including 5.2 are vulnerable to a logic error. A stream configured as private with protected history, where new subscribers should not be allowed to see messages sent before they were subscribed, when edited causes the server to incorrectly send an API event that includes the edited message to all of the stream’s current subscribers. This API event is ignored by official clients, but can be observed by using a modified client or the browser’s developer tools. This bug will be fixed in Zulip Server 5.3. There are no known workarounds.
Severity ?
Assigner
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CVE-2022-24751 (GCVE-0-2022-24751)
Vulnerability from cvelistv5 – Published: 2022-03-16 13:30 – Updated: 2025-04-23 18:53
VLAI?
Summary
Zulip is an open source group chat application. Starting with version 4.0 and prior to version 4.11, Zulip is vulnerable to a race condition during account deactivation, where a simultaneous access by the user being deactivated may, in rare cases, allow continued access by the deactivated user. A patch is available in version 4.11 on the 4.x branch and version 5.0-rc1 on the 5.x branch. Upgrading to a fixed version will, as a side effect, deactivate any cached sessions that may have been leaked through this bug. There are currently no known workarounds.
Severity ?
5.4 (Medium)
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
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CVE-2022-23656 (GCVE-0-2022-23656)
Vulnerability from cvelistv5 – Published: 2022-03-02 20:25 – Updated: 2025-04-23 18:59
VLAI?
Summary
Zulip is an open source team chat app. The `main` development branch of Zulip Server from June 2021 and later is vulnerable to a cross-site scripting vulnerability on the recent topics page. An attacker could maliciously craft a full name for their account and send messages to a topic with several participants; a victim who then opens an overflow tooltip including this full name on the recent topics page could trigger execution of JavaScript code controlled by the attacker. Users running a Zulip server from the main branch should upgrade from main (2022-03-01 or later) again to deploy this fix.
Severity ?
4.6 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
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CVE-2021-3967 (GCVE-0-2021-3967)
Vulnerability from cvelistv5 – Published: 2022-02-26 23:00 – Updated: 2024-08-03 17:09
VLAI?
Summary
Improper Access Control in GitHub repository zulip/zulip prior to 4.10.
Severity ?
4.1 (Medium)
CWE
- CWE-284 - Improper Access Control
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zulip | zulip/zulip |
Affected:
unspecified , < 4.10
(custom)
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