ShellCodeX Intelligence Brief
CRITICAL
Vulnerabilities
Zimbra Classic Web Client flaw could enable stored XSS via crafted emails
Source headline: Critical Zimbra Flaw Could Let Crafted Emails Run Malicious Code in User Sessions
Threat level
Critical
Signal strength
85/100
Source confidence
1 source
Published
2 hours ago
Intelligence Summary
Zimbra is warning customers about a critical issue affecting its Classic Web Client. The problem is a stored cross-site scripting (XSS) vulnerability. Attackers can use specially crafted emails to trigger malicious scripts within a user’s session. This could lead to arbitrary code execution in the context of the victim. Zimbra urges administrators to apply the available updates as soon as possible.
Recommended Action
Prioritize immediate review, validate exposure, and patch or mitigate affected systems.
Topics
Original reporting
The Hacker News
Critical Zimbra Flaw Could Let Crafted Emails Run Malicious Code in User Sessions
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