Auth bypass in Zulip
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 chan…
Vulnerability class: Broken Access Control
EPSS: 0.003 (20.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Zulip — versions >= 10.0, < 10.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2025-47930?
- CVE-2025-47930 is a medium-severity vulnerability in Zulip, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2025-05-16.
- How severe is CVE-2025-47930?
- Medium severity. CVSS v3 base score is 5.3 out of 10.