MediumGHSA-2j54-93q2-3hjqCVE-2026-47352

TYPO3 CMS has Broken Access Control in Backend API

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-backendComposer

Affected: <10.4.57
Fixed in: 10.4.57

Update to the fixed version for your release line, for example:composer require typo3/cms-backend:^10.4.57

typo3/cms-backendComposer

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-backend:^11.5.51

typo3/cms-backendComposer

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-backend:^12.4.46

typo3/cms-backendComposer

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-backend:^13.4.31

typo3/cms-backendComposer

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-backend:^14.3.3

Details

Problem

Authenticated backend users were able to retrieve file metadata via several Backend API routes without proper permission checks, allowing access to files outside their permitted file mounts or storages.

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 Phong Lan for reporting this issue, and to TYPO3 core & security team member Oliver Hader for fixing it.

Resources

TYPO3-CORE-SA-2026-015

Is GHSA-2j54-93q2-3hjq in any of your client repos?

Checking one package by hand is fine. Checking it across forty client projects is not. NPMscan reads the lockfiles in every GitHub repo you pick, finds each project with an affected typo3/cms-core, and gives you the command that fixes it.

Scan a project free, no signup Or connect GitHub to scan every repo

References

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