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zulip server

40 known vulnerabilities across versions
Vulnerabilities are listed by affected version. Select any CVE for the full briefing and its intelligence graph.
CVE-2026-40300
all versions
Zulip is an open-source team collaboration tool. Prior to 12.0, With message_edit_history_visibility_policy set to "moves", /api/v
6.5MEDIUM
CVE-2026-24050
>= 5.0 and < 11.5
Zulip is an open-source team collaboration tool. From 5.0 to before 11.5, some administrative actions on the user profile were sus
5.4MEDIUM
CVE-2025-52559
>= 2.0.1 and < 10.4
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 serve
6.8MEDIUM
CVE-2025-31478
< 10.2
Zulip is an open-source team collaboration tool. Zulip supports a configuration where account creation is limited solely by being
8.2HIGH
CVE-2025-30369
>= 1.6.0 and < 10.1
Zulip is an open-source team collaboration tool. The API for deleting an organization custom profile field is supposed to be restr
2.7LOW
CVE-2025-27149
>= 2.1.0 and < 10.0
Zulip server provides an open-source team chat that helps teams stay productive and focused. Prior to 10.0, the data export to org
2.7LOW
CVE-2024-56136
>= 7.0 and < 9.4
Zulip server provides an open-source team chat that helps teams stay productive and focused. Zulip Server 7.0 and above are vulner
5.3MEDIUM
CVE-2024-36612
>= 8.0 and <= 8.3
Zulip from 8.0 to 8.3 contains a memory leak vulnerability in the handling of popovers.
7.5HIGH
CVE-2024-27286
>= 3.0 and < 8.3
Zulip is an open-source team collaboration tool. When a user moves a Zulip message, they have the option to move all messages in t
6.5MEDIUM
CVE-2024-21630
>= 1.9.0 and < 6.2
Zulip is an open-source team collaboration tool. A vulnerability in version 8.0 is similar to CVE-2023-32677, but applies to multi
4.3MEDIUM
CVE-2023-47642
>= 1.3.0 and < 7.5
Zulip is an open-source team collaboration tool. It was discovered by the Zulip development team that active users who had previou
4.3MEDIUM
CVE-2023-32678
< 7.3
Zulip is an open-source team collaboration tool with topic-based threading that combines email and chat. Users who used to be subs
6.5MEDIUM
CVE-2023-33186
all versions
Zulip is an open-source team collaboration tool with unique topic-based threading that combines the best of email and chat to make
8.2HIGH
CVE-2023-22735
all versions
Zulip is an open-source team collaboration tool. In versions of zulip prior to commit 2f6c5a8 but after commit 04cf68b users c
4.4MEDIUM
CVE-2022-41914
>= 5.0 and < 5.7
Zulip is an open-source team collaboration tool. For organizations with System for Cross-domain Identity Management(SCIM) account
3.7LOW
CVE-2022-31134
>= 2.1.0 and < 5.4
Zulip is an open-source team collaboration tool. Zulip Server versions 2.1.0 above have a user interface tool, accessible only to
4.9MEDIUM
CVE-2022-23656
>= 2021-06-03 and < 2022-03-01
Zulip is an open source team chat app. The main development branch of Zulip Server from June 2021 and later is vulnerable to a c
4.6MEDIUM
CVE-2022-21706
>= 2.0.0 and < 4.10.0
Zulip is an open-source team collaboration tool with topic-based threading. Zulip Server version 2.0.0 and above are vulnerable to
7.2HIGH
CVE-2021-30487
>= 3.0 and < 3.4
In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to move messages to streams in other
2.7LOW
CVE-2021-30479
< 3.4
An issue was discovered in Zulip Server before 3.4. A bug in the implementation of the all_public_streams API feature resulted in
5.3MEDIUM
CVE-2021-30478
< 3.4
An issue was discovered in Zulip Server before 3.4. A bug in the implementation of the can_forge_sender permission (previously is_
4.3MEDIUM
CVE-2021-30477
< 3.4
An issue was discovered in Zulip Server before 3.4. A bug in the implementation of replies to messages sent by outgoing webhooks t
4.3MEDIUM
CVE-2020-15070
< 2.1.7
Zulip Server 2.x before 2.1.7 allows eval injection if a privileged attacker were able to write directly to the postgres database,
8.8HIGH
CVE-2020-14215
< 2.1.5
Zulip Server before 2.1.5 has Incorrect Access Control because 0198_preregistrationuser_invited_as adds the administrator role to
7.5HIGH
CVE-2020-14194
< 2.1.5
Zulip Server before 2.1.5 allows reverse tabnapping via a topic header link.
5.4MEDIUM
CVE-2020-12759
< 2.1.5
Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook.
6.1MEDIUM
CVE-2020-9445
< 2.1.3
Zulip Server before 2.1.3 allows XSS via the modal_link feature in the Markdown functionality.
6.1MEDIUM
CVE-2020-9444
<= 2.1.3
Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality.
6.1MEDIUM
CVE-2020-10935
< 2.1.3
Zulip Server before 2.1.3 allows XSS via a Markdown link, with resultant account takeover.
5.4MEDIUM
CVE-2019-19775
>= 1.9.0 and < 2.0.8
The image thumbnailing handler in Zulip Server versions 1.9.0 to before 2.0.8 allowed an open redirect that was visible to logged-
6.1MEDIUM
CVE-2019-18933
>= 1.7.0 and < 2.0.7
In Zulip Server versions from 1.7.0 to before 2.0.7, a bug in the new user signup process meant that users who registered their ac
9.8CRITICAL
CVE-2019-16216
>= 1.8.0 and < 2.0.5
Zulip server before 2.0.5 incompletely validated the MIME types of uploaded files. A user who is logged into the server could uplo
5.4MEDIUM
CVE-2019-16215
< 2.0.5
The Markdown parser in Zulip server before 2.0.5 used a regular expression vulnerable to exponential backtracking. A user who is l
6.5MEDIUM
CVE-2018-9999
< 1.7.2
In Zulip Server versions before 1.7.2, there was an XSS issue with user uploads and the (default) LOCAL_UPLOADS_DIR storage backen
5.4MEDIUM
CVE-2018-9990
< 1.7.2
In Zulip Server versions before 1.7.2, there was an XSS issue with stream names in topic typeahead.
6.1MEDIUM
CVE-2018-9987
>= 1.5.0 and < 1.7.2
In Zulip Server versions 1.5.x, 1.6.x, and 1.7.x before 1.7.2, there was an XSS issue with muting notifications.
6.1MEDIUM
CVE-2018-9986
< 1.7.2
In Zulip Server versions before 1.7.2, there were XSS issues with the frontend markdown processor.
6.1MEDIUM
CVE-2017-0910
< 1.7.1
In Zulip Server before 1.7.1, on a server with multiple realms, a vulnerability in the invitation system lets an authorized user o
8.8HIGH
CVE-2017-0896
all versions
Zulip Server 1.5.1 and below suffer from an error in the implementation of the invite_by_admins_only setting in the Zulip group ch
6.5MEDIUM
CVE-2017-0881
< 1.4.3
An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application se
4.3MEDIUM
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