CVE-2024-40400 is a high-severity (CVSS 8.8) Unrestricted File Upload vulnerability in automad/automad. A fix is available for automad/automad — see the affected versions and patch details below.
Automad arbitrary file upload vulnerability
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for CVE-2024-40400.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
automad/automadReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
An arbitrary file upload vulnerability in the image upload function of Automad v2.0.0 allows attackers to execute arbitrary code via a crafted file.
The malicious file has to be prepared and uploaded manually by the admin. Usually there is only one admin per site and that is the owner.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | automad/automad | all versions | 2.0.0-alpha.5composer require automad/automad:^2.0.0-alpha.5 |
Affected Products
automadautomadDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for automad/automad, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update automad/automad to 2.0.0-alpha.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-40400 is resolved across your whole dependency graph.
Workarounds
Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.
Frequently Asked Questions
Is CVE-2024-40400 in your dependencies?
Find it across Packagist, including transitive dependencies.