CVE-2024-23824Public exploitNetwork attack vector

Admin-page hang via unrestricted logo dimensions

Published Feb 2, 2024 · Updated Jun 17, 2025

Resource-consumption denial of service in mailcow: dockerized 2023-12b and earlier allows remote authenticated users to hang the admin page. The logo customization handler passes uploaded images to Imagick without first limiting file size or pixel dimensions, so a pixel-flood image exhausts processing resources. Administrative access and a successful logo upload are required; the resulting hang affects the admin interface while mail services continue operating.

CVSS severity4.7
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource-consumption denial of service in mailcow: dockerized 2023-12b and earlier allows remote authenticated users to hang the admin page. The logo customization handler passes uploaded images to Imagick without first limiting file size or pixel dimensions, so a pixel-flood image exhausts processing resources. Administrative access and a successful logo upload are required; the resulting hang affects the admin interface while mail services continue operating.

The record

CVE
CVE-2024-23824
Published
Feb 2, 2024
Updated
Jun 17, 2025
Vendor
mailcow
Product
mailcow: dockerized
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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=< 2024-01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

mailcow · mailcow: dockerizedversion=< 2024-01

Published CVSS scores

4.7GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
2.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

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

Technologies

Your stack

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Your stack

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