CVE-2020-9443: Zulipchat Zulip Desktop

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

Zulip Desktop before 4.0.3 loaded untrusted content in an Electron webview with web security disabled, which can be exploited for XSS in a number of ways. This especially affects Zulip Desktop 2.3.82.

Affected products

• Zulipchat Zulip Desktop: before 4.0.3 (fixed in 4.0.3)

Published 2020-03-18. Last modified 2026-06-17.