What’s Vulnerable › Vulnerabilities

CVE-2017-0910

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-11-27 · updated 2026-06-17
• Weakness: CWE-863

Description

In Zulip Server before 1.7.1, on a server with multiple realms, a vulnerability in the invitation system lets an authorized user of one realm on the server create a user account on any other realm.

Affected products

• zulip: before 1.7.1 — fixed in 1.7.1

How to fix

Upgrade to a fixed version: zulip 1.7.1. Check the vendor advisory for mitigations.

References

• http://blog.zulip.org/2017/11/23/zulip-1-7-1-released/
• https://github.com/zulip/zulip/commit/960d736e55cbb9386a68e4ee45f80581fd2a4e32
• http://blog.zulip.org/2017/11/23/zulip-1-7-1-released/
• https://github.com/zulip/zulip/commit/960d736e55cbb9386a68e4ee45f80581fd2a4e32

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