Cyber Resilience

CVE-2026-59897

Hono 4.3.3 – 4.12.27

Published
08 July 2026
Modified
10 July 2026
Patch / advisory
View advisory
CVSS Score v3.1 4.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Score 0.0013 3th percentile
Risk Priority 36 floored blend · peak EPSS

Summary

CVE-2026-59897 is a medium-severity Use of Less Trusted Source (CWE-348) vulnerability in Hono Hono. Its CVSS base score is 4.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Path Interception (T1034); ranked at the 3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-4 (Information Flow Enforcement) and IA-3 (Device Identification and Authentication) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

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…

more

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.

CWE(s)
CWE-348

Related Threats

MITRE ATT&CK Enterprise Techniques

T1034 Path Interception Persistence
**This technique has been deprecated.
attack.mitre.org →
T1557.001 Name Resolution Poisoning and SMB Relay Credential Access
By responding to LLMNR/NBT-NS/mDNS network traffic, adversaries may spoof an authoritative source for name resolution to force communication with an adversary controlled system.
attack.mitre.org →
T1557.002 ARP Cache Poisoning Credential Access
Adversaries may poison Address Resolution Protocol (ARP) caches to position themselves between the communication of two or more networked devices.
attack.mitre.org →
T1557.003 DHCP Spoofing Credential Access
Adversaries may redirect network traffic to adversary-owned systems by spoofing Dynamic Host Configuration Protocol (DHCP) traffic and acting as a malicious DHCP server on the victim network.
attack.mitre.org →
T1557 Adversary-in-the-Middle Credential Access
Adversaries may attempt to position themselves between two or more networked devices using an adversary-in-the-middle (AiTM) technique to support follow-on behaviors such as [Network Sniffing](https://attack.
attack.mitre.org →
T1584.002 DNS Server Resource Development
Adversaries may compromise third-party DNS servers that can be used during targeting.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-27700Same product: Hono Hono
CVE-2025-58362Same product: Hono Hono
CVE-2026-24472Same product: Hono Hono
CVE-2023-50710Same product: Hono Hono
CVE-2026-29085Same product: Hono Hono
CVE-2026-24771Same product: Hono Hono
CVE-2026-24398Same product: Hono Hono
CVE-2026-22817Same product: Hono Hono
CVE-2026-22818Same product: Hono Hono
CVE-2025-59139Same product: Hono Hono

Affected Assets

hono
hono
4.3.3 — 4.12.27

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 7 hardening rules · 4 OS baselines
Validate
Prove the fix (OWASP ASVS)

—

Mitigating Controls (NIST 800-53 r5) AI

SR-4 Provenance good match

Provenance tracking supplies the information needed to distinguish and prefer more-trusted sources, reducing the chance that a weaker source is chosen.

AC-4 Information Flow Enforcement good match

Information flow enforcement can require that data or decisions are taken only from explicitly approved, higher-trust sources rather than less-verified ones.

IA-3 Device Identification and Authentication good match

Device identification and authentication forces verification of the source before any data it supplies is used, eliminating reliance on unauthenticated inputs.

SC-7 Boundary Protection partial match

Boundary protection monitors and filters traffic at external interfaces, structurally limiting the ability to accept data from less-trusted external sources.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

ID.RA-09 mostly match
prevents

Explicit authenticity/integrity checks before use directly reduce selection of a less-trusted source.

DE.AE-03 partial match
prevents

Correlating multiple sources can surface discrepancies that discourage reliance on the less-trusted one.

PR.DS-02 partial match
prevents

Protecting data-in-transit integrity helps ensure the more-trusted source is the one whose data is accepted.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.27 Secure system architecture and engineering principles mostly match
prevents

Secure architecture principles include trusted input channels and source verification mechanisms.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect and prevent acceptance of data from less-trusted sources during development.

A.8.20 Networks security partial match
degrades

Network security controls can enforce trusted data paths and source validation, reducing reliance on unverified inputs.

A.8.21 Security of network services partial match
degrades

Secure network services include source validation and integrity checks that help prevent acceptance of data from less-trusted origins.

A.8.26 Application security requirements partial match
prevents

Application security requirements can mandate trusted data sources and input validation, directly addressing the weakness.

A.8.28 Secure coding partial match
prevents

Secure coding practices can enforce checks that prefer or validate the more trusted data source.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Oracle Linux 8 (1 rule)
  • V-248575 OL 8 must prevent the installation of software, patches, service packs, device drivers, or operating system components of local packages without verification they have been digitally signed using a certificate that is issued by a Certificate Authority (CA) that is recognized and approved by the organization. prevents CWE-348
Oracle Linux 9 (1 rule)
  • V-271525 OL 9 must have GPG signature verification enabled for all software repositories. prevents CWE-348
RHEL 7 (1 rule)
  • V-204447 The Red Hat Enterprise Linux operating system must prevent the installation of software, patches, service packs, device drivers, or operating system components from a repository without verification they have been digitally signed using a certificate that is issued by a Certificate Authority (CA) that is recognized and approved by the organization. prevents CWE-348

References