> CVE-2026-59897 [MEDIUM]

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PUBLISHED
2026-07-08 17:17
MODIFIED
2026-07-08 17:17
CVSS_SCORE V3
4.8
EPSS (Prob. Exploit)
0.18%
Top 92.5%
DATA SOURCES:
NVD đź”— 2026-07-08 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-11-01 GITHUB đź”— 2026-11-05 OSV đź”— 2026-11-02

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
EXPLOITABILITY
2.2
IMPACT
2.5

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
Low (L)
Divulgation limitée d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
Low
Divulgation limitée d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-348

> CWE DETAILED DESCRIPTIONS

CWE-348: Use of Less Trusted Source - The product has two different sources of the same data or information, but it uses the source that has less support for verification, is less trusted, or is less resistant to attack.

> GITHUB SECURITY ADVISORY

GHSA-xgm2-5f3f-mvvc MODERATE

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

AFFECTED PACKAGES:
NPM / hono
>= 4.3.3, < 4.12.27
Fixed in: 4.12.27

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

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

AFFECTED PACKAGES:
Unknown / Unknown
143 versions affected
ALIASES:
GHSA-xgm2-5f3f-mvvc

> HISTORIQUE DES MODIFICATIONS

Première apparition
08/07/2026 17:17
Source: NVD
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-348: Use of Less Trusted Source - The product has two different sources of the same data or information, but it uses the source that has less support for verification, is less trusted, or is less ...
Total des modifications: 1 Dernière mise à jour: 3 months ago

> REFERENCES

https://github.com/honojs/hono/commit/aa921770d09bc35970362d5a2630a878f6d982fd
https://github.com/honojs/hono/releases/tag/v4.12.27
https://github.com/honojs/hono/security/advisories/GHSA-xgm2-5f3f-mvvc
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