CVE-2026-49742: TYPO3 CMS - Broken Access Control in Media Module

Published Jun 9, 2026
·
Updated

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

Other sources

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. This issue affects TYPO3 CMS versions 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.

— NVD

Affected Software

9 affected componentsFixes available
Typo3 TYPO3 CMS>=11.0.0<=11.5.50, >=12.0.0<=12.4.45, >=13.0.0<=13.4.30, >=14.0.0<=14.3.2
composer/typo3/cms-filelist>=14.0.0<14.3.3
14.3.3
composer/typo3/cms-filelist>=13.0.0<13.4.31
13.4.31
composer/typo3/cms-filelist>=12.0.0<12.4.46
12.4.46
composer/typo3/cms-filelist>=11.0.0<11.5.51
11.5.51
composer/typo3/cms-core>=14.0.0<14.3.3
14.3.3
composer/typo3/cms-core>=13.0.0<13.4.31
13.4.31
composer/typo3/cms-core>=12.0.0<12.4.46
12.4.46
composer/typo3/cms-core>=11.0.0<11.5.51
11.5.51

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade composer/typo3/cms-filelist to a version that resolves this vulnerability.

    Fixed in 14.3.3
  2. Upgrade

    Upgrade composer/typo3/cms-filelist to a version that resolves this vulnerability.

    Fixed in 13.4.31
  3. Upgrade

    Upgrade composer/typo3/cms-filelist to a version that resolves this vulnerability.

    Fixed in 12.4.46
  4. Upgrade

    Upgrade composer/typo3/cms-filelist to a version that resolves this vulnerability.

    Fixed in 11.5.51
  5. Upgrade

    Upgrade composer/typo3/cms-core to a version that resolves this vulnerability.

    Fixed in 14.3.3
  6. Upgrade

    Upgrade composer/typo3/cms-core to a version that resolves this vulnerability.

    Fixed in 13.4.31
  7. Upgrade

    Upgrade composer/typo3/cms-core to a version that resolves this vulnerability.

    Fixed in 12.4.46
  8. Upgrade

    Upgrade composer/typo3/cms-core to a version that resolves this vulnerability.

    Fixed in 11.5.51

Event History

Jun 9, 2026
CVE Published
via MITRE·10:54 AM
Data Sourced
via MITRE·10:54 AM
DescriptionWeakness
Data Sourced
via NVD·11:16 AM
DescriptionSeverityWeakness
Jun 12, 2026
Advisory Published
via GitHub·07:09 PM
Data Sourced
via GitHub·07:09 PM
DescriptionWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-49742?

The severity of CVE-2026-49742 is high, rated at 7.1 on the CVSS scale.

2

How do I fix CVE-2026-49742?

To fix CVE-2026-49742, update your TYPO3 CMS to the latest version where the vulnerability has been patched.

3

What type of vulnerability is CVE-2026-49742?

CVE-2026-49742 is a Broken Access Control vulnerability in the Media Module of TYPO3 CMS.

4

What could be the impact of CVE-2026-49742?

The impact of CVE-2026-49742 could result in unauthorized access to sensitive files stored in the fallback storage of the file abstraction layer.

5

Who is affected by CVE-2026-49742?

Backend users with file download permissions in TYPO3 CMS are affected by CVE-2026-49742.

Company

Resources

Contact

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CVE-2026-49742 - TYPO3 CMS - Broken Access Control in Media Module - SecAlerts