CVSS 3.0
4.3 mediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCVE-2017-0881
An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server before 1.4.3 allowed an authenticated user to subscribe to a private stream that should have required an invitation from an existing member to join. The issue affects all previously released versions of the Zulip server.
Severity
- EPSS
- 1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-863, CWE-200
- Published
- Modified
- Record from
- the NVD, synced
Affected
- zulip:zulip_server
References
- http://www.securityfocus.com/bid/97159
- https://github.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255f
- https://groups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJ
- http://www.securityfocus.com/bid/97159
- https://github.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255f