What’s Vulnerable › Vulnerabilities

CVE-2020-10857

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-05 · updated 2026-06-17

Description

Zulip Desktop before 5.0.0 improperly uses shell.openExternal and shell.openItem with untrusted content, leading to remote code execution.

Affected products

• Zulip Desktop: before 5.0.0 — fixed in 5.0.0

How to fix

Upgrade to a fixed version: Zulip Desktop 5.0.0. Check the vendor advisory for mitigations.

References

• https://blog.zulip.com/2020/04/01/zulip-desktop-5-0-0-security-release/
• https://blog.zulip.com/2020/04/01/zulip-desktop-5-0-0-security-release/

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