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CVE-2026-59897

5.3 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.3 · honoNVD modified 2026-10-25 17:10

Affected (CPE criteria) 1

  • cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*

References 3