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The global TYPO3 core was updated to the new upstream versions 9.5.4, 8.7.24 (LTS) and 7.6.33 (ELTS, please contact us to request a quote)
For details, please see the official announcements:
Warning: Some security fixes can be considered as breaking changes in order to apply strong security defaults. Please read the security bulletins carefully - manual adjustments concerning backward compatibility are described there as well.