CVE-2024-45398: Remote command execution through file upload in contao/core-bundle

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-17 · updated 2026-06-17
Weakness: CWE-434

Description

Contao is an Open Source CMS. In affected versions a back end user with access to the file manager can upload malicious files and execute them on the server. Users are advised to update to Contao 4.13.49, 5.3.15 or 5.4.3. Users unable to update are advised to configure their web server so it does not execute PHP files and other scripts in the Contao file upload directory.

Affected products

contao: from 4.0.0 before 4.13.49; from 5.0.0 before 5.3.15; from 5.4.0 before 5.4.3 — fixed in 4.13.49, 5.3.15, 5.4.3

How to fix

Upgrade to a fixed version: contao 4.13.49, 5.3.15, 5.4.3. Check the vendor advisory for mitigations.

References

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