CVE-2025-34404
BaseFortify
Publication date: 2025-12-09
Last updated on: 2025-12-09
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mailenable | mailenable | 10.54 |
| mailenable | mailenable | to 10.54 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a reflected cross-site scripting (XSS) issue in MailEnable versions prior to 10.54. It occurs in the InstanceScope parameter of the /Mondo/lang/sys/Forms/CAL/compose.aspx page. The parameter is not properly sanitized when processed via a GET request and is reflected inside a <script> block in a JavaScript variable. An attacker can craft a payload that breaks out of the existing JavaScript function, inject malicious script, and execute arbitrary JavaScript in the victim's browser.
How can this vulnerability impact me? :
Exploitation of this vulnerability can allow an attacker to execute arbitrary JavaScript in a victim's browser. This can lead to redirecting victims to malicious websites, stealing non-HttpOnly cookies, injecting arbitrary HTML or CSS, and performing actions on behalf of the authenticated user, potentially compromising user accounts and data.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by sending crafted GET requests to the /Mondo/lang/sys/Forms/CAL/compose.aspx page with manipulated InstanceScope parameter values containing typical XSS payloads. Monitoring HTTP responses for reflected script code in the var gInstanceScope JavaScript variable indicates the presence of the vulnerability. Specific commands could include using curl or similar tools to send requests, for example: curl -v "http://<target>/Mondo/lang/sys/Forms/CAL/compose.aspx?InstanceScope=<payload>" and inspecting the response for reflected script injection. Additionally, web vulnerability scanners that test for reflected XSS in URL parameters can be used to detect this issue. [2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include upgrading MailEnable to version 10.54 or later, where this vulnerability has been fixed. If upgrading is not immediately possible, applying input validation and sanitization on the InstanceScope parameter to prevent script injection is recommended. Additionally, monitoring and restricting access to the vulnerable endpoint and educating users about potential phishing or malicious redirects can help reduce risk until a patch is applied. [2, 3]