TYPO3 CMS - Unrestricted File Upload in Form Framework

中 6.3CVE-2026-15305 · GHSA-mfqj-cqv3-h7xw · 14/07/2026 公開 · 24/10/2026 更新

要点

CVE-2026-15305 は typo3/cms-form に影響する深刻度「中」 (CVSS 6.3) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.25%（全脆弱性の 17.0% より高い）。
対処：14.3.5 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
typo3/cms-form Packagist	`≥ 14.2.0, < 14.3.5`	`14.3.5`

概要

Problem

Users were able to upload files with arbitrary MIME types to forms using FileUpload or ImageUpload elements with allowedMimeTypes configured - uploading PHP files was not possible. 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.

Solution

Update to TYPO3 version 14.3.5 LTS that fixes the problem described.

Credits

Thanks to Sébastien Convers for reporting this issue, and to Josua Vogel and Oliver Hader for fixing it.

NVD の説明

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.