magento2-csp-split-header

Magento 2 module that solves the problem of oversized CSP headers by splitting them into multiple headers. It extends Magento's CSP Simple Policy Renderer to replace the existing CSP headers, ensuring they remain valid and reducing the likelihood of exceeding the web server's maximum header size. Maintained by basecom on GitHub, where it has earned 52 stars from the community.

It's actively developed around magento, magento2, magento2-extension, and is a solid reference for anyone building with these tools.