PT-2025-50136 · Mailenable · Mailenable

Mushroomsecteam · CVE-2025-34397 · Published 2025-12-09 · Updated 2025-12-10

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 MailEnable versions prior to 10.54

Description MailEnable versions prior to 10.54 contain a reflected cross-site scripting (XSS) vulnerability in the Message parameter of the ''/Mobile/Compose.aspx'' API endpoint. The Message value is not properly sanitized when processed via a GET request and is reflected into a JavaScript context in the response. An attacker can execute arbitrary JavaScript in a victim’s browser by supplying a crafted payload that terminates the existing script block/function, injects attacker-controlled JavaScript, and comments out the remaining code when the victim opens the crafted reply URL. Successful exploitation can redirect victims to malicious sites, steal non-HttpOnly cookies, inject arbitrary HTML or CSS, and perform actions as the authenticated user.

Recommendations Update MailEnable to version 10.54 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-34397

Affected Products

Mailenable

References · 6

• https://osv.dev/vulnerability/CVE-2025-34397 · Vendor Advisory
• https://mailenable.com/Standard-ReleaseNotes.txt · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-34397 · Security Note
• https://vulncheck.com/advisories/mailenable-reflected-xss-in-message-parameter-of-mobile-compose-aspx · Note
• https://twitter.com/CVEnew/status/1998781323733860769 · Twitter Post
• https://mailenable.com · Note