CVE-2026-0859

Name of the Vulnerable Software and Affected Versions TYPO3 versions 10.0.0 through 10.4.54 TYPO3 versions 11.0.0 through 11.5.48 TYPO3 versions 12.0.0 through 12.4.40 TYPO3 versions 13.0.0 through 13.4.22 TYPO3 versions 14.0.0 through 14.0.1

Description A flaw exists in TYPO3 that allows local users with write access to the spool directory to execute arbitrary PHP code on the web server. This is possible by crafting a malicious file that is deserialized during the mailer:spool:send command.

Recommendations Update TYPO3 versions to a version later than 10.4.54. Update TYPO3 versions to a version later than 11.5.48. Update TYPO3 versions to a version later than 12.4.40. Update TYPO3 versions to a version later than 13.4.22. Update TYPO3 versions to a version later than 14.0.1.