PT-2025-50147 · Mailenable · Mailenable

Mushroomsecteam · Published 2025-12-09 · Updated 2025-12-10 · CVE-2025-34409

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 The software contains a reflected cross-site scripting (XSS) issue in the Failed parameter of the ''/Mondo/lang/sys/Forms/MAI/AddRecipientsResult.aspx'' endpoint. The Failed value is not properly sanitized when processed via a GET request and is reflected in the response, allowing an attacker to inject arbitrary script. An attacker can supply a crafted payload to close an existing HTML list element, insert attacker-controlled JavaScript, and comment out remaining code, leading to script execution in a victim’s browser when the victim visits a malicious link. 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 to version 10.54 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-34409

Affected Products

Mailenable

References · 6

• https://osv.dev/vulnerability/CVE-2025-34409 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-34409 · Security Note
• https://mailenable.com/Standard-ReleaseNotes.txt · Patch
• https://vulncheck.com/advisories/mailenable-reflected-xss-in-failed-parameter-of-mai-addrecipientsresult-aspx · Note
• https://mailenable.com · Note
• https://twitter.com/CVEnew/status/1998781318042198377 · Twitter Post