NPM: Hono: API Gateway v1 adapter can drop a distinct repeated request header value during de-duplication

NPM: Hono: API Gateway v1 adapter can drop a distinct repeated request header value during de-duplication vulnerability discovered by ? in WordPress Npm hono versions = 4.3.3, 4.12.27...

CVE-2026-59897: Use of Less Trusted Source

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.3.3 before 4.12.27, the AWS API Gateway v1 adapter can drop a distinct repeated request header value because it de-duplicates values using a substring comparison instead of an exact match, so middleware o...