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High severityNVD Advisory· Published Jun 9, 2026· Updated Jun 9, 2026

CVE-2026-47346

CVE-2026-47346

Description

Backend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., .FORM.YAML) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL statements, allowing attackers to escalate privileges by creating administrative backend user accounts. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
typo3/cms-corePackagist
< 10.4.5710.4.57
typo3/cms-corePackagist
>= 11.0.0, < 11.5.5111.5.51
typo3/cms-corePackagist
>= 12.0.0, < 12.4.4612.4.46
typo3/cms-corePackagist
>= 13.0.0, < 13.4.3113.4.31
typo3/cms-corePackagist
>= 14.0.0, < 14.3.314.3.3
typo3/cms-formPackagist
< 10.4.5710.4.57
typo3/cms-formPackagist
>= 11.0.0, < 11.5.5111.5.51
typo3/cms-formPackagist
>= 12.0.0, < 12.4.4612.4.46
typo3/cms-formPackagist
>= 13.0.0, < 13.4.3113.4.31
typo3/cms-formPackagist
>= 14.0.0, < 14.3.314.3.3

Affected products

4

Patches

Vulnerability mechanics

References

7

News mentions

1