CVE-2024-11182: MDaemon Email Server Cross-Site Scripting (XSS) Vulnerability

Q: How do I fix CVE-2024-11182?

mdaemon: upgrade to 24.5.1. Exact commands for each OS are on this page.

Q: Is CVE-2024-11182 being exploited?

Yes. CVE-2024-11182 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

Q: What does CVE-2024-11182 affect?

CVE-2024-11182 affects mdaemon. Severity is medium (CVSS 6.1). An XSS issue was discovered in MDaemon Email Server before version 24.5.1c. An attacker can send an HTML e-mail message with JavaScript in an img tag. This could allow a remote attacker to load arbitrary JavaScript code in the context

Q: How urgent is CVE-2024-11182?

Priority 71/100. EPSS top 2%: very likely to be exploited; Exploited in the wild (CISA KEV)

Patch now

MEDIUM 6.1EXPLOITEDUPGRADE

CVE-2024-11182 is a medium-severity flaw (CVSS 6.1) affecting mdaemon, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An XSS issue was discovered in MDaemon Email Server before version 24.5.1c. An attacker can send an HTML e-mail message with JavaScript in an img tag. This could allow a remote attacker to load arbitrary JavaScript code in the context of a webmail user's browser window.

Why this priority

EPSS top 2%: very likely to be exploited
Exploited in the wild (CISA KEV)

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	33.3% (top 2%)
CISA exploited list	Yes, fix due 2025-06-09
Weakness	CWE-79
Published	2024-11-15
Last modified	2026-06-17

Publisher (CNA): ESET · Vendor: mdaemon

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

Am I affected?

Timeline

2024-11-15 11:15 UTCPublished CVE record published
2025-05-19Exploited Added to the CISA Known Exploited Vulnerabilities list
2025-06-09Deadline CISA due date for US federal agencies to patch
2026-06-17 06:57 UTCUpdated Record last modified

mdaemon mdaemon UPGRADE

Affected: < 24.5.1

Fixed in: 24.5.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 24.5.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mdaemon

Note

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

Exact fixes by distribution

Fedora 46 · byobu · FIXED · 7.23-1.fc46 · FEDORA-2026-08f2b53446 · source

sudo dnf upgrade --advisory=FEDORA-2026-08f2b53446

Verify at the official source NVD · CVE Program · CISA KEV catalog · 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-2024-11182?

mdaemon: upgrade to 24.5.1. Exact commands for each OS are on this page.

Is CVE-2024-11182 being exploited?

Yes. CVE-2024-11182 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2024-11182 affect?

CVE-2024-11182 affects mdaemon. Severity is medium (CVSS 6.1). An XSS issue was discovered in MDaemon Email Server before version 24.5.1c. An attacker can send an HTML e-mail message with JavaScript in an img tag. This could allow a remote attacker to load arbitrary JavaScript code in the context

How urgent is CVE-2024-11182?

Priority 71/100. EPSS top 2%: very likely to be exploited; Exploited in the wild (CISA KEV)

References

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