Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Zulip | Zulip | >= 10.0, < 10.3 |
Related Weaknesses (CWE)
References
- https://github.com/zulip/zulip/commit/d2ff4bda4c3efa30fc3ab1f151255cfdbf370f78Patch
- https://github.com/zulip/zulip/security/advisories/GHSA-rqg7-xfqg-v7q5Third Party Advisory
- https://zulip.com/help/configure-who-can-create-channelsProduct
- https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-10-3Release Notes
FAQ
What is CVE-2025-47930?
CVE-2025-47930 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 priva...
How severe is CVE-2025-47930?
CVE-2025-47930 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-47930?
Check the references section above for vendor advisories and patch information. Affected products include: Zulip Zulip.