CVE-2017-0896

medium

Published 2017-06-02 · Modified 2026-05-13

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

6.5

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

6.5

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.

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact

Vendor	Product	Versions
zulip	zulip_server	`1.3.0`
zulip	zulip_server	`1.3.1`
zulip	zulip_server	`1.3.2`
zulip	zulip_server	`1.3.3`
zulip	zulip_server	`1.3.4`
zulip	zulip_server	`1.3.6`
zulip	zulip_server	`1.3.7`
zulip	zulip_server	`1.3.8`
zulip	zulip_server	`1.3.9`
zulip	zulip_server	`1.3.10`
zulip	zulip_server	`1.3.11`
zulip	zulip_server	`1.3.12`
zulip	zulip_server	`1.3.13`
zulip	zulip_server	`1.4.0`
zulip	zulip_server	`1.4.1`
zulip	zulip_server	`1.4.2`
zulip	zulip_server	`1.4.3`
zulip	zulip_server	`1.5.0`
zulip	zulip_server	`1.5.1`

References

CWEs

CWE-285 CWE-862

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.