CVE-2024-45516

Medium

Description

An issue was discovered in Zimbra Collaboration (ZCS) 9.0.0 before Patch 43, 10.0.x before 10.0.12, 10.1.x before 10.1.4, and 8.8.15 before Patch 47. A Cross-Site Scripting (XSS) vulnerability in the Zimbra Classic UI allows attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information. This issue arises from insufficient sanitization of HTML content, including malformed <img> tags with embedded JavaScript. The vulnerability is triggered when a user views a specially crafted email in the Classic UI, requiring no additional user interaction.

SeverityMedium
CVSS6.1
Exploit probability—
ProductSynacor Zimbra Collaboration Suite
PublishedMay 14, 2025
First seenMay 14, 2025

How to fix

Update
  • synacor zimbra_collaboration_suite10.0.12, 10.1.4 or later

Affected products

ProductAffected versionsFixed in
synacor zimbra_collaboration_suite10.0.0 ≤ v < 10.0.12, 10.1.0 ≤ v < 10.1.4, 8.8.15, 9.0.010.0.12, 10.1.4

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