CVE-2025-34409
MailEnable < 10.54 Reflected XSS in Failed Parameter of MAI/AddRecipientsResult.aspx
Description
MailEnable versions prior to 10.54 contain a reflected cross-site scripting (XSS) vulnerability in the Failed parameter of /Mondo/lang/sys/Forms/MAI/AddRecipientsResult.aspx. The Failed value is not properly sanitized when processed via a GET request and is reflected in the response, allowing an attacker to break out of existing markup and inject arbitrary script. A remote attacker can supply a crafted payload that closes an existing HTML list element, inserts attacker-controlled JavaScript, and comments 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.
INFO
Published Date :
Dec. 9, 2025, 6:15 p.m.
Last Modified :
Dec. 9, 2025, 8:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update MailEnable to version 10.54 or later.
- Sanitize user input for the 'Failed' parameter.
- Validate 'Failed' parameter values on GET requests.
- Avoid reflecting user input directly in responses.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-34409.
| URL | Resource |
|---|---|
| https://mailenable.com/Standard-ReleaseNotes.txt | Release Notes |
| https://www.mailenable.com/ | Product |
| https://www.vulncheck.com/advisories/mailenable-reflected-xss-in-failed-parameter-of-mai-addrecipientsresult-aspx | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-34409 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-34409
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-34409 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-34409 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Dec. 09, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:mailenable:mailenable:*:*:*:*:standard:*:*:* versions up to (excluding) 10.54 Added Reference Type VulnCheck: https://mailenable.com/Standard-ReleaseNotes.txt Types: Release Notes Added Reference Type VulnCheck: https://www.mailenable.com/ Types: Product Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/mailenable-reflected-xss-in-failed-parameter-of-mai-addrecipientsresult-aspx Types: Third Party Advisory -
New CVE Received by [email protected]
Dec. 09, 2025
Action Type Old Value New Value Added Description MailEnable versions prior to 10.54 contain a reflected cross-site scripting (XSS) vulnerability in the Failed parameter of /Mondo/lang/sys/Forms/MAI/AddRecipientsResult.aspx. The Failed value is not properly sanitized when processed via a GET request and is reflected in the response, allowing an attacker to break out of existing markup and inject arbitrary script. A remote attacker can supply a crafted payload that closes an existing HTML list element, inserts attacker-controlled JavaScript, and comments 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-79 Added Reference https://mailenable.com/Standard-ReleaseNotes.txt Added Reference https://www.mailenable.com/ Added Reference https://www.vulncheck.com/advisories/mailenable-reflected-xss-in-failed-parameter-of-mai-addrecipientsresult-aspx