CVE-2024-33533

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-08-12 · updated 2026-06-17
Weakness: CWE-79

Description

An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0, issue 1 of 2. A reflected cross-site scripting (XSS) vulnerability has been identified in the Zimbra webmail admin interface. This vulnerability occurs due to inadequate input validation of the packages parameter, allowing an authenticated attacker to inject and execute arbitrary JavaScript code within the context of another user's browser session. By uploading a malicious JavaScript file and crafting a URL containing its location in the packages parameter, the attacker can exploit this vulnerability. Subsequently, when another user visits the crafted URL, the malicious JavaScript code is executed.

Affected products

Zimbra Collaboration: from 10.0.0 before 10.0.8; 9.0.0, 9.0.0-p0, 9.0.0-p1, 9.0.0-p10, 9.0.0-p11, 9.0.0-p12 (+32) — fixed in 10.0.8

How to fix

Upgrade to a fixed version: Zimbra Collaboration 10.0.8. Check the vendor advisory for mitigations.

References

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