CVE catalog
CVE-2026-59897
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 becaus
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.18% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | hono | Not reported | 4.12.27 | fixed |
| Npm | hono | Not reported | 4.12.27 | fixed |
| Npm | hono | Not reported | 4.12.27 | fixed |
| Cpe | hono | Not reported | 4.12.27 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | hono | cpe | Not reported | 4.12.27 | Not reported | Not reported | Not reported |
| Npm | hono | npm | Not reported | 4.12.27 | Not reported | Not reported | Not reported |
| Npm | hono | npm | Not reported | 4.12.27 | Not reported | Not reported | Not reported |
| Cpe | hono | cpe | Not reported | 4.12.27 | Not reported | NVD-CVE-2026-59897 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://github.com/advisories/GHSA-xgm2-5f3f-mvvc]
- [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]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-59897]
- [https://osv.dev/vulnerability/GHSA-xgm2-5f3f-mvvc]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59897.json]
[FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]