Pimcore's Admin Classic Bundle provides a backend user interface for Pimcore. Prior to version 1.3.3, an attacker can create, delete etc. tags without having the permission to do so. A fix is available in version 1.3.3. As a workaround, one may apply the patch manually.
https://github.com/pimcore/admin-ui-classic-bundle/security/advisories/GHSA-3rfr-mpfj-2jwq
https://github.com/pimcore/admin-ui-classic-bundle/pull/412
https://github.com/pimcore/admin-ui-classic-bundle/commit/24660b6d5ad9cbcb037a48d4309a6024e9adf251