CVE-2018-9999: Zulip Server

Medium severity, CVSS 5.4. EPSS: 0.7% chance of exploitation in the next 30 days.

In Zulip Server versions before 1.7.2, there was an XSS issue with user uploads and the (default) LOCAL_UPLOADS_DIR storage backend.

Affected products

• Zulip Zulip Server: before 1.7.2 (fixed in 1.7.2)

Published 2018-04-18. Last modified 2026-06-17.