CVE-2026-32851: MailEnable versions prior to 10.55 contain a reflected cross-site scripting vulnerability in the webmail inter

Q: How do I fix CVE-2026-32851?

mailenable: upgrade to 10.55. Exact commands for each OS are on this page.

Q: Is CVE-2026-32851 being exploited?

CVE-2026-32851 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-32851 affect?

CVE-2026-32851 affects mailenable. Severity is medium (CVSS 6.1). 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

Q: How urgent is CVE-2026-32851?

Priority 33/100. Public exploit reference

Routine

MEDIUM 6.1UPGRADE

CVE-2026-32851 is a medium-severity flaw (CVSS 6.1) affecting mailenable. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-03-23
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: mailenable

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-23 20:16 UTCPublished CVE record published
2026-06-17 10:36 UTCUpdated Record last modified

mailenable mailenable UPGRADE

Affected: < 10.55

Fixed in: 10.55

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mailenable || rpm -q mailenable || mailenable --version

2. UPGRADE to 10.55 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mailenable

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mailenable

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-32851?

mailenable: upgrade to 10.55. Exact commands for each OS are on this page.

Is CVE-2026-32851 being exploited?

CVE-2026-32851 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-32851 affect?

CVE-2026-32851 affects mailenable. Severity is medium (CVSS 6.1). 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

How urgent is CVE-2026-32851?

Priority 33/100. Public exploit reference

Related CVEs

CVE-2026-44400 HIGH 8.1 UPGRADE MailEnable Enterprise Premium 10.55 and earlier contains an improper authorization vulnerability in the WebAdm
CVE-2026-32852 MEDIUM 6.1 UPGRADE MailEnable versions prior to 10.55 contain a reflected cross-site scripting vulnerability in the webmail inter
CVE-2026-32850 MEDIUM 6.1 UPGRADE MailEnable versions prior to 10.55 contain a reflected cross-site scripting vulnerability in the webmail inter

References

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