What’s Vulnerable › Vulnerabilities

CVE-2018-9987

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-04-18 · updated 2026-06-17
• Weakness: CWE-79

Description

In Zulip Server versions 1.5.x, 1.6.x, and 1.7.x before 1.7.2, there was an XSS issue with muting notifications.

Affected products

• zulip: from 1.5.0 before 1.7.2 — fixed in 1.7.2

How to fix

Upgrade to a fixed version: zulip 1.7.2. Check the vendor advisory for mitigations.

References

• https://blog.zulip.org/2018/04/12/zulip-1-7-2-released/
• https://blog.zulip.org/2018/04/12/zulip-1-7-2-released/

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