CVE-2024-40400Public exploitNetwork attack vector

Authenticated code execution via unrestricted image upload

Published Jul 19, 2024 · Updated Aug 2, 2024

Unrestricted file upload in Automad before 2.0.0-alpha.5 allows remote authenticated users to execute PHP code through the image API. Image::save decoded attacker-supplied base64 data and wrote it without first restricting the requested extension to allowed image types. An administrator must manually upload the crafted file; requesting the uploaded PHP content then executes code on the server.

CVSS severity8.7
High
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Automad before 2.0.0-alpha.5 allows remote authenticated users to execute PHP code through the image API. Image::save decoded attacker-supplied base64 data and wrote it without first restricting the requested extension to allowed image types. An administrator must manually upload the crafted file; requesting the uploaded PHP content then executes code on the server.

The record

CVE
CVE-2024-40400
Published
Jul 19, 2024
Updated
Aug 2, 2024
Vendor
Automad
Product
Automad
Classifications
CWE-434, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=2.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Automad · Automadversion=2.0.0

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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.

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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-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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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