TYPO3-CORE-SA-2026-014: Broken Access Control in Clipboard
It has been discovered that TYPO3 CMS is susceptible to broken access control.
- Component Type: TYPO3 CMS
- Subcomponent: Clipboard (ext:backend)
- Release Date: June 9, 2026
- Vulnerability Type: Broken Access Control
- Affected Versions: 10.0.0-10.4.56, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30, 14.0.0-14.3.2
- Severity: Medium
- Suggested CVSS: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- References: CVE-2026-47351, CWE-200, CWE-862
Problem Description
Backend users were able to insert arbitrary records and files into the TYPO3 clipboard without proper read permission checks, which allowed users to gather information about records and files they were not authorized to view.
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
Thanks to Vincent Yang for reporting this issue, and to TYPO3 security team member Elias Häußler for fixing it.
General Advice
Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list.
General Note
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