HighGHSA-hwvq-2w67-rvxpCVE-2026-47346

TYPO3 CMS has Broken Access Control in its Form Framework

Published 12 Jun 2026 · Updated 10 Sept 2026

Affected packages

typo3/cms-coreComposer
Affected
<10.4.57
Fixed in
10.4.57
Update to the fixed version for your release line, for example:composer require typo3/cms-core:^10.4.57
typo3/cms-coreComposer
Affected
>=11.0.0 <11.5.51
Fixed in
11.5.51
Update to the fixed version for your release line, for example:composer require typo3/cms-core:^11.5.51
typo3/cms-coreComposer
Affected
>=12.0.0 <12.4.46
Fixed in
12.4.46
Update to the fixed version for your release line, for example:composer require typo3/cms-core:^12.4.46
typo3/cms-coreComposer
Affected
>=13.0.0 <13.4.31
Fixed in
13.4.31
Update to the fixed version for your release line, for example:composer require typo3/cms-core:^13.4.31
typo3/cms-coreComposer
Affected
>=14.0.0 <14.3.3
Fixed in
14.3.3
Update to the fixed version for your release line, for example:composer require typo3/cms-core:^14.3.3
typo3/cms-formComposer
Affected
<10.4.57
Fixed in
10.4.57
Update to the fixed version for your release line, for example:composer require typo3/cms-form:^10.4.57
typo3/cms-formComposer
Affected
>=11.0.0 <11.5.51
Fixed in
11.5.51
Update to the fixed version for your release line, for example:composer require typo3/cms-form:^11.5.51
typo3/cms-formComposer
Affected
>=12.0.0 <12.4.46
Fixed in
12.4.46
Update to the fixed version for your release line, for example:composer require typo3/cms-form:^12.4.46
typo3/cms-formComposer
Affected
>=13.0.0 <13.4.31
Fixed in
13.4.31
Update to the fixed version for your release line, for example:composer require typo3/cms-form:^13.4.31
typo3/cms-formComposer
Affected
>=14.0.0 <14.3.3
Fixed in
14.3.3
Update to the fixed version for your release line, for example:composer require typo3/cms-form:^14.3.3

Details

Problem

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.

Solution

Update to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described.

Credits

TYPO3 CMS thanks Alexander Künzl for reporting this issue, and to TYPO3 core & security team members Oliver Hader and Benjamin Franzke for fixing it.

Resources

Is GHSA-hwvq-2w67-rvxp in any of your client repos?

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.