PT-2025-18143 · Unknown · Mdaemon Email Server

Matthieu Faou · Published 2025-04-29 · Updated 2025-04-29 · CVE-2025-3929

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions MDaemon Email Server versions 25.0.1 and below

Description A Stored Cross-Site Scripting (XSS) issue was discovered, allowing a remote attacker to send a specially crafted HTML e-mail message with JavaScript in an img tag. This could enable the attacker to load arbitrary JavaScript code in the context of a webmail user's browser window and access user data.

Recommendations For MDaemon Email Server versions 25.0.1 and below, update to a version above 25.0.1 to resolve the issue. As a temporary workaround, consider restricting the use of HTML e-mail messages with JavaScript in the img tag until a patch is available.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-3929

Affected Products

Mdaemon Email Server

References · 8

• https://osv.dev/vulnerability/CVE-2025-3929 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-3929 · Security Note
• https://t.me/cvenotify/120157 · Telegram Post
• https://t.me/cvetracker/22608 · Telegram Post
• https://mdaemon.com/pages/downloads-critical-updates · Note
• https://t.me/cvedetector/23988 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1917202770748129547 · Twitter Post
• https://twitter.com/CVEnew/status/1917184768829210993 · Twitter Post