Actively exploited in the wild
MDaemon Email Server Cross-Site Scripting (XSS) Vulnerability
MDaemon - Email Server · Listed in the CISA KEV since 2025-05-19. This indicates confirmed attacks in production environments.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CVE-2024-11182
MediumCVSS 6.1KEVSummary
An XSS issue was discovered in MDaemon Email Server before version 24.5.1c. An attacker can send an HTML e-mail message with JavaScript in an img tag, which could allow a remote attacker to load arbitrary JavaScript code in the context of a webmail user's browser window.
Risk Assessment
An attacker could execute arbitrary JavaScript in the user's browser, potentially leading to session data theft or other actions in the webmail context.
Recommendation
Update MDaemon Email Server to version 24.5.1c or later and filter email content for malicious code.
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Original NVD description (English source)
An XSS issue was discovered in MDaemon Email Server before version 24.5.1c. An attacker can send an HTML e-mail message with JavaScript in an img tag. This could allow a remote attacker to load arbitrary JavaScript code in the context of a webmail user's browser window.