### 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](https://typo3.org/security/advisory/typo3-core-sa-2026-015)
Update typo3/cms-backend to 10.4.57; typo3/cms-backend to 11.5.51; typo3/cms-backend to 12.4.46; typo3/cms-backend to 13.4.31; typo3/cms-backend to 14.3.3; typo3/cms-core to 10.4.57; typo3/cms-core to 11.5.51; typo3/cms-core to 12.4.46; typo3/cms-core to 13.4.31; typo3/cms-core to 14.3.3 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanTYPO3 CMS has Broken Access Control in Backend API affects typo3/cms-backend (composer), typo3/cms-backend (composer), typo3/cms-backend (composer), typo3/cms-backend (composer), typo3/cms-backend (composer), typo3/cms-core (composer), typo3/cms-core (composer), typo3/cms-core (composer), typo3/cms-core (composer), typo3/cms-core (composer). Severity is medium. ### 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](https://typo3.org/security/advisory/typo3-core-sa-2026-015)
AI coding agents often install or upgrade packages automatically in composer. A medium vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
### 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](https://typo3.org/security/advisory/typo3-core-sa-2026-015)
Update typo3/cms-backend to 10.4.57; typo3/cms-backend to 11.5.51; typo3/cms-backend to 12.4.46; typo3/cms-backend to 13.4.31; typo3/cms-backend to 14.3.3; typo3/cms-core to 10.4.57; typo3/cms-core to 11.5.51; typo3/cms-core to 12.4.46; typo3/cms-core to 13.4.31; typo3/cms-core to 14.3.3 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanTYPO3 CMS has Broken Access Control in Backend API affects typo3/cms-backend (composer), typo3/cms-backend (composer), typo3/cms-backend (composer), typo3/cms-backend (composer), typo3/cms-backend (composer), typo3/cms-core (composer), typo3/cms-core (composer), typo3/cms-core (composer), typo3/cms-core (composer), typo3/cms-core (composer). Severity is medium. ### 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](https://typo3.org/security/advisory/typo3-core-sa-2026-015)
AI coding agents often install or upgrade packages automatically in composer. A medium vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|
| typo3/cms-backendcomposer | <10.4.57 | 10.4.57 |
|---|---|---|
| typo3/cms-backendcomposer | >=11.0.0,<11.5.51 | 11.5.51 |
| typo3/cms-backendcomposer | >=12.0.0,<12.4.46 | 12.4.46 |
| typo3/cms-backendcomposer | >=13.0.0,<13.4.31 | 13.4.31 |
| typo3/cms-backendcomposer | >=14.0.0,<14.3.3 | 14.3.3 |
| typo3/cms-corecomposer | <10.4.57 | 10.4.57 |
| typo3/cms-corecomposer | >=11.0.0,<11.5.51 | 11.5.51 |
| typo3/cms-corecomposer | >=12.0.0,<12.4.46 | 12.4.46 |
| typo3/cms-corecomposer | >=13.0.0,<13.4.31 | 13.4.31 |
| typo3/cms-corecomposer | >=14.0.0,<14.3.3 | 14.3.3 |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard| Package | Affected range | Fixed version |
|---|
| typo3/cms-backendcomposer | <10.4.57 | 10.4.57 |
|---|---|---|
| typo3/cms-backendcomposer | >=11.0.0,<11.5.51 | 11.5.51 |
| typo3/cms-backendcomposer | >=12.0.0,<12.4.46 | 12.4.46 |
| typo3/cms-backendcomposer | >=13.0.0,<13.4.31 | 13.4.31 |
| typo3/cms-backendcomposer | >=14.0.0,<14.3.3 | 14.3.3 |
| typo3/cms-corecomposer | <10.4.57 | 10.4.57 |
| typo3/cms-corecomposer | >=11.0.0,<11.5.51 | 11.5.51 |
| typo3/cms-corecomposer | >=12.0.0,<12.4.46 | 12.4.46 |
| typo3/cms-corecomposer | >=13.0.0,<13.4.31 | 13.4.31 |
| typo3/cms-corecomposer | >=14.0.0,<14.3.3 | 14.3.3 |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard