Magento 2.4.5

Magento 2.4.5 advanced the 2.4.4 line with PHP 8.1 compatibility, support for OpenSearch 1.2, and compatibility work for newer Elasticsearch and MariaDB versions. It also included a large set of core quality fixes across checkout, catalog, GraphQL, payments, shipping, indexing, and administration, plus security fixes delivered in the base release and subsequent patch releases. The cycle retained the Magento 2.4 architecture and its existing upgrade model, so extensions, themes, integrations, and custom code still needed compatibility validation when moving from the preceding release.

This cycle has reached end of life. Adobe no longer provides ongoing security fixes, quality patches, or vendor support for Magento 2.4.5, leaving newly discovered vulnerabilities and platform defects to be handled by the merchant or a third party. Staying on it also increases operational risk as hosting providers, PHP runtimes, search services, databases, payment providers, and extension vendors move beyond the versions this release was designed to support. Deferred upgrades usually make remediation harder because customizations and integrations accumulate against an unsupported codebase.

Inventory the exact Magento edition, installed 2.4.5 patch level, PHP version, database, search engine, payment and shipping integrations, themes, and custom modules. Select a currently supported Magento release and review its official system requirements and backward-incompatible changes before choosing the target. Build a non-production upgrade environment, update Composer dependencies and third-party extensions to versions compatible with the target, and remediate custom-code deprecations and API changes. Reindex and test storefront, admin, checkout, payment capture and refunds, tax and shipping calculations, asynchronous consumers, integrations, GraphQL or REST clients, search, caching, and deployment rollback procedures before scheduling production migration.