CVE detail
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 contains a patch.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 16.1 · diversity 15.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
4 source links · newest first
- https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-10-3zulip.readthedocs.io
No excerpt available.
Release Noteszulip.readthedocs.ioMay 16, 2025, 12:15 AM No excerpt available.
Productzulip.comMay 16, 2025, 12:15 AMNo excerpt available.
Exploitgithub.comMay 16, 2025, 12:15 AMNo excerpt available.
Exploitgithub.comMay 16, 2025, 12:15 AM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2022-31168CVSS 5.4 · Medium
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 or…
- CVE-2026-73059CVSS 7.1 · High
stoatchat before 0.15.0 contains a permission bypass vulnerability in the message_fetch route that checks only ViewChannel permission instead of requiring ReadMessageHistory. Atta…
- CVE-2026-19598CVSS 9.8 · Critical
The Pods – Custom Content Types and Fields plugin for WordPress is vulnerable to Privilege Escalation via Authorization Bypass in all versions up to, and including, 3.3.9. The vul…
- CVE-2026-74248CVSS 4.3 · Medium
OpenStack Octavia through 18.0.0 mishandles quality of service (QoS) policy authorization. By associating another project's QoS policy with an amphora, an authenticated user may p…
- CVE-2026-19629CVSS 8.6 · High
A privilege escalation vulnerability exists in Tenable Security Center that allows a user with "Security Manager" role and "manage user" permission on a single group to modify use…
- CVE-2026-49989CVSS 7.1 · High
CrateDB is a distributed SQL database. Prior to versions 6.2.8 and 6.3.2, any authenticated user can read or delete any blob whose SHA-1 digest they know, and can plant new blobs…