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Test your applicationsUpgrade github.com/jub0bs/fcors/internal/radix
to version 0.9.0 or higher.
Affected versions of this package are vulnerable to Origin Validation Error due to the implementation of CORS middleware that incorrectly processes origin patterns with shared proper suffixes. An attacker can exploit this flaw to conduct cross-origin attacks from untrusted origins by crafting requests that match the improperly allowed origin patterns.