GHSA-chm7-4vch-h8vr
TYPO3 CMS has Broken Access Control in its Media Module
Quick fix
GHSA-chm7-4vch-h8vr — typo3/cms-core: upgrade to the fixed version with the command below.
composer require typo3/cms-core:^11.5.51Details
### Problem Backend users with file download permissions were able to download files from the fallback storage of the file abstraction layer (FAL) via the Media Module. Since the fallback storage resolves paths relative to the server's document root, this could expose sensitive files such as log files.
### Solution Update to TYPO3 versions 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 Hyunseo Shin for reporting this issue, and to TYPO3 security team member Torben Hansen for fixing it.
### Resources * [TYPO3-CORE-SA-2026-013](https://typo3.org/security/advisory/typo3-core-sa-2026-013)
Are you affected?
Enter the version of the package you're using.
Affected packages
11.0.0Fixed in: 11.5.51composer require typo3/cms-core:^11.5.5112.0.0Fixed in: 12.4.46composer require typo3/cms-core:^12.4.4613.0.0Fixed in: 13.4.31composer require typo3/cms-core:^13.4.3114.0.0Fixed in: 14.3.3composer require typo3/cms-core:^14.3.311.0.0Fixed in: 11.5.51composer require typo3/cms-filelist:^11.5.5112.0.0Fixed in: 12.4.46composer require typo3/cms-filelist:^12.4.4613.0.0Fixed in: 13.4.31composer require typo3/cms-filelist:^13.4.3114.0.0Fixed in: 14.3.3composer require typo3/cms-filelist:^14.3.3References
- https://github.com/TYPO3/typo3/security/advisories/GHSA-chm7-4vch-h8vr[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-49742[ADVISORY]
- https://github.com/TYPO3/typo3/commit/ad636b6183843b57c758a1e12174a75093ac93c3[WEB]
- https://github.com/TYPO3/typo3/commit/caa6b444d7ab1bdd1eb76a68004c8be73d98e6ae[WEB]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-49742.yaml[WEB]
- https://github.com/TYPO3/typo3[PACKAGE]
- https://typo3.org/security/advisory/typo3-core-sa-2026-013[WEB]