CVE-2024-11182Known exploitationNetwork attack vector

Stored XSS via unsanitized email image tags

Published Nov 15, 2024 · Updated Oct 21, 2025

Stored XSS in MDaemon Email Server 24.5.0 and earlier allows remote attackers to run JavaScript in a webmail user's browser. Webmail fails to neutralize JavaScript embedded in an img tag of an attacker-supplied HTML email before rendering the stored message. Exploitation requires the recipient to view the message, and the script runs with that user's webmail context, enabling browser-session data access and actions.

CVSS severity5.3
Medium
EPSS probability17.71%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in MDaemon Email Server 24.5.0 and earlier allows remote attackers to run JavaScript in a webmail user's browser. Webmail fails to neutralize JavaScript embedded in an img tag of an attacker-supplied HTML email before rendering the stored message. Exploitation requires the recipient to view the message, and the script runs with that user's webmail context, enabling browser-session data access and actions.

The record

CVE
CVE-2024-11182
Published
Nov 15, 2024
Updated
Oct 21, 2025
Vendor
MDaemon Technologies
Product
MDaemon Email Server
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=24.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MDaemon Technologies · MDaemon Email Serverversion=0 <=24.5.0

Published CVSS scores

5.3ESET, spol. s r.o.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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