CVE-2026-59897 | BDVDB-2026-346387 Detail

Description#

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 or application logic that depends on the complete X-Forwarded-For chain, rate limiting, audit logging, or proxy-chain validation can receive incomplete data. This issue is fixed in version 4.12.27.

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History#

1. Version 12026-07-08Record published in the CVE List.
2. Version 22026-07-09Most recent update recorded in the CVE List.