What’s Vulnerable › Vulnerabilities

CVE-2017-0896

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-06-02 · updated 2026-06-17
• Weakness: CWE-285

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.

Affected products

• zulip: 1.3.0, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.6 (+13)

References

• https://github.com/zulip/zulip/commit/1f48fa27672170bba3b9a97384905bb04c18761b
• https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ
• https://hackerone.com/reports/224210
• https://github.com/zulip/zulip/commit/1f48fa27672170bba3b9a97384905bb04c18761b
• https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ
• https://hackerone.com/reports/224210

Get alerted when CVE-2017-0896 or the next vulnerability affects your stack