What’s Vulnerable › Vulnerabilities

CVE-2020-11737

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-05 · updated 2026-06-17
• Weakness: CWE-79

Description

A cross-site scripting (XSS) vulnerability in Web Client in Zimbra 9.0 allows a remote attacker to craft links in an E-Mail message or calendar invite to execute arbitrary JavaScript. The attack requires an A element containing an href attribute with a "www" substring (including the quotes) followed immediately by a DOM event listener such as onmouseover. This is fixed in 9.0.0 Patch 2.

Affected products

• Zimbra: 9.0.0

References

• https://blog.zimbra.com/2020/05/new-zimbra-9-kepler-patch-2/
• https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P2
• https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
• https://blog.zimbra.com/2020/05/new-zimbra-9-kepler-patch-2/
• https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P2
• https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

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