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CVE-2026-15305

CVE-2026-15305 · TYPO3 CMS - Unrestricted File Upload in Form Framework

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Users were able to upload files with arbitrary MIME types to forms using FileUpload or ImageUpload elements with allowedMimeTypes configured. The restriction was not enforced server-side because the MimeTypeValidator was registered during form building before concrete form definition properties were applied, resulting in the validator never being added to the processing pipeline. This issue affects TYPO3 CMS versions 14.2.0-14.3.4.

CVSS 6.3 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • typo3 cms

    Versions
    • ≥ 14.2.0, < 14.3.5: Affected (semver)

    Update to 14.3.5

  • typo3/cms-form Packagist

    Versions
    • v14.2.0
    • v14.3.0
    • v14.3.1
    • v14.3.2
    • v14.3.3
    • v14.3.4
    Affected ranges
    • ECOSYSTEM: ≥ 14.2.0, < 14.3.5

    Update to 14.3.5

Original sources

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