What’s Vulnerable › Vulnerabilities

CVE-2020-10935

• Severity: medium (CVSS 5.4 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: yes
• Published: 2020-04-20 · updated 2026-06-17
• Weakness: CWE-79

Description

Zulip Server before 2.1.3 allows XSS via a Markdown link, with resultant account takeover.

Affected products

• zulip: before 2.1.3 — fixed in 2.1.3

How to fix

Upgrade to a fixed version: zulip 2.1.3. Check the vendor advisory for mitigations.

References

• https://blog.zulip.org/2020/04/01/zulip-server-2-1-3-security-release/
• https://www.coresecurity.com/advisories/zulip-account-takeover-stored-xss
• https://blog.zulip.org/2020/04/01/zulip-server-2-1-3-security-release/
• https://www.coresecurity.com/advisories/zulip-account-takeover-stored-xss

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