Vulnerability · Published Mar 23, 2026 · Assigned by VulnCheck

CVE-2026-32852MailEnable < 10.55 Reflected XSS via FreeBusy.aspx StartDate Parameter

Medium 5.1

In plain English

A medium-severity cross-site scripting in MailEnable from MailEnable. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.3%top 76.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

MailEnable versions prior to 10.55 contain a reflected cross-site scripting vulnerability in the webmail interface that allows remote attackers to execute arbitrary JavaScript in a victim's browser by crafting a malicious URL. Attackers can inject malicious code through the StartDate parameter in the FreeBusy.aspx form, which is not properly sanitized before being embedded into dynamically generated JavaScript.

Affected products (as reported)

Vendor	Product	Versions
MailEnable	MailEnable	0 – before 10.55.0

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References

https://www.mailenable.com/rss/article.asp?Source=RSSADMIN&ID=MAILENABLEVERSION1055 vendor-advisory, patch
https://karmainsecurity.com/KIS-2026-05 technical-description, exploit
https://mailenable.com/Standard-ReleaseNotes.txt release-notes
https://www.mailenable.com/ product
https://www.vulncheck.com/advisories/mailenable-reflected-xss-via-freebusy-aspx-startdate-parameter third-party-advisory