VulnerabilityModified
CVE-2021-30479
An issue was discovered in Zulip Server before 3.4.
MEDIUM 5.3EPSS 0.86%
Does this matter?
Lower severity and a low EPSS score (0.86%). Track it; it rarely justifies an emergency change on its own.
Description
An issue was discovered in Zulip Server before 3.4. A bug in the implementation of the all_public_streams API feature resulted in guest users being able to receive message traffic to public streams that should have been only accessible to members of the organization.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.86% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Affected
- zulip/zulip server
- Source
- cve@mitre.org
References
- https://blog.zulip.com/2021/04/14/zulip-server-3-4/Vendor Advisory
- https://blog.zulip.com/2021/04/14/zulip-server-3-4/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.