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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.

PUBLISHED Reserved 2025-04-15 | Published 2025-12-09 | Updated 2025-12-09 | Assigner VulnCheck




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Product status

Default status
unaffected

Any version before 10.54
affected

Credits

MushroomSecTeam (Spotify, AmirSUN, M30Brad, Hannah Green, av01t3x, PG) finder

References

mailenable.com/Standard-ReleaseNotes.txt release-notes patch

www.mailenable.com/ product

www.vulncheck.com/...wscontext-parameter-of-mai-compose-aspx third-party-advisory

cve.org (CVE-2025-34425)

nvd.nist.gov (CVE-2025-34425)