CVE-2017-0896
Zulip Server 1.5.1 and below suffer from an error in the implementation of the invite_by_admins_only setting in the Zulip group chat application server that allowed an authenticated user to invite other users to join a Zulip organization even if the…
Does this matter?
Lower severity and a low EPSS score (1.28%). Track it; it rarely justifies an emergency change on its own.
Description
Zulip Server 1.5.1 and below suffer from an error in the implementation of the invite_by_admins_only setting in the Zulip group chat application server that allowed an authenticated user to invite other users to join a Zulip organization even if the organization was configured to prevent this.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.28% probability · 70th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-285, CWE-862
- Affected
- zulip/zulip server
- Source
- support@hackerone.com
EPSS 1.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/zulip/zulip/commit/1f48fa27672170bba3b9a97384905bb04c18761bIssue Tracking, Patch
- https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ
- https://hackerone.com/reports/224210Permissions Required
- https://github.com/zulip/zulip/commit/1f48fa27672170bba3b9a97384905bb04c18761bIssue Tracking, Patch
- https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ
- https://hackerone.com/reports/224210Permissions Required
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.