CVE-2026-47351: TYPO3 CMS - Broken Access Control in Clipboard
Problem 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 TYPO3 CMS thanks Vincent Yang for reporting this issue, and to TYPO3 security team member Elias Häußler for fixing it.
Resources TYPO3-CORE-SA-2026-014
Other sources
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. This issue affects TYPO3 CMS versions 10.4.0-13.4.30 and 14.0.0-14.3.2.
— NVD
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
composer/typo3/cms-backendto a version that resolves this vulnerability.Fixed in 14.3.3 - Upgrade
Upgrade
composer/typo3/cms-backendto a version that resolves this vulnerability.Fixed in 13.4.31 - Upgrade
Upgrade
composer/typo3/cms-backendto a version that resolves this vulnerability.Fixed in 12.4.46 - Upgrade
Upgrade
composer/typo3/cms-backendto a version that resolves this vulnerability.Fixed in 11.5.51 - Upgrade
Upgrade
composer/typo3/cms-backendto a version that resolves this vulnerability.Fixed in 10.4.57 - Upgrade
Upgrade
composer/typo3/cms-coreto a version that resolves this vulnerability.Fixed in 14.3.3 - Upgrade
Upgrade
composer/typo3/cms-coreto a version that resolves this vulnerability.Fixed in 13.4.31 - Upgrade
Upgrade
composer/typo3/cms-coreto a version that resolves this vulnerability.Fixed in 12.4.46 - Upgrade
Upgrade
composer/typo3/cms-coreto a version that resolves this vulnerability.Fixed in 11.5.51 - Upgrade
Upgrade
composer/typo3/cms-coreto a version that resolves this vulnerability.Fixed in 10.4.57 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch TYPO3-CORE-SA-2026-014
Event History
Frequently Asked Questions
What is the severity of CVE-2026-47351?
CVE-2026-47351 has a medium severity rating of 5.3 according to the CVSS score.
How do I fix CVE-2026-47351?
To fix CVE-2026-47351, upgrade your TYPO3 CMS to versions 14.4.0 or later, which addresses the broken access control issues.
What does CVE-2026-47351 involve?
CVE-2026-47351 involves a broken access control vulnerability that allows unauthorized backend users to insert records into the TYPO3 clipboard.
Which versions of TYPO3 are affected by CVE-2026-47351?
CVE-2026-47351 affects TYPO3 CMS versions 10.4.0 to 13.4.30 and 14.0.0 to 14.3.2.
What type of vulnerability is CVE-2026-47351 classified as?
CVE-2026-47351 is classified as an information leak vulnerability due to improper access controls.