CVE-2025-34425 MailEnable < 10.54 Reflected XSS in WindowContext Parameter of MAI/compose.aspx
Remote attackers can execute arbitrary JavaScript in victims' browsers via a crafted link, potentially stealing cookies or hijacking sessions in MailEnable.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-34425?
CVE-2025-34425 is a medium-severity cross-site scripting vulnerability in Mailenable Mailenable, published on 9 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
MailEnable versions prior to 10.54 contain a reflected cross-site scripting (XSS) vulnerability in the WindowContext parameter of /Mondo/lang/sys/Forms/MAI/compose.aspx. The WindowContext value is not properly sanitized when processed via a GET request and is reflected within a <script> context in the JavaScript variable window.location, allowing an attacker to break out of the existing script and inject arbitrary JavaScript. A remote attacker can supply a crafted payload that terminates the existing ProcessContextSwitchResult() function, inserts attacker-controlled script, and comments out remaining code, leading to script execution in a victim’s browser when the victim visits a malicious link or attempts to send an email. Successful exploitation can redirect victims to malicious sites, steal non-HttpOnly cookies, inject arbitrary HTML or CSS, and perform actions as the authenticated user.
Weakness: CWE-79
Which versions are affected by CVE-2025-34425?
It affects 1 product.
Products include Mailenable Mailenable.
How do I fix CVE-2025-34425?
No fix has been published for CVE-2025-34425 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-34425 being exploited?
There is no known exploitation of CVE-2025-34425 in the wild and no public exploit code.
Other vulnerabilities in Mailenable Mailenable
- CVE-2015-9280 XML external entity in n/a
- CVE-2025-44148 Cross-site scripting in n/a
- CVE-2019-12924 XML external entity in n/a
- CVE-2015-9278 MailEnable before 8.60 allows Privilege Escalation because admin accounts could be created as a consequence of %0A mishandling in AUTH.TAB a
- CVE-2015-9277 Path traversal in n/a
Sources
Also known as GHSA-v4hm-2c9r-89mm.