What’s Vulnerable › Vulnerabilities

CVE-2020-24582

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-10 · updated 2026-06-17
• Weakness: CWE-79

Description

Zulip Desktop before 5.4.3 allows XSS because string escaping is mishandled during composition of the HTML for the user interface.

Affected products

• Zulipchat Zulip Desktop: before 5.4.3 — fixed in 5.4.3

How to fix

Upgrade to a fixed version: Zulipchat Zulip Desktop 5.4.3. Check the vendor advisory for mitigations.

References

• https://blog.zulip.com/2020/09/10/zulip-desktop-5-4-3-security-release/
• https://blog.zulip.com/2020/09/10/zulip-desktop-5-4-3-security-release/

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