Wiz
Vulnerability DatabaseCVE-2026-39409

CVE-2026-39409: 
JavaScript vulnerability analysis and mitigation

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, ipRestriction() does not canonicalize IPv4-mapped IPv6 client addresses (e.g. ::ffff:127.0.0.1) before applying IPv4 allow or deny rules. In environments such as Node.js dual-stack, this can cause IPv4 rules to fail to match, leading to unintended authorization behavior. This vulnerability is fixed in 4.12.12.

Source: NVD

Related JavaScript vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

GHSA-p6x5-p4xf-cc4rCRITICAL9.8
  • JavaScriptJavaScript
  • math-codegen
NoYesApr 17, 2026
CVE-2026-41242CRITICAL9.4
  • JavaScriptJavaScript
  • librechat
NoYesApr 18, 2026
GHSA-v38x-c887-992fCRITICAL9.2
  • JavaScriptJavaScript
  • flowise
NoYesApr 18, 2026
CVE-2026-41265CRITICAL9.2
  • JavaScriptJavaScript
  • flowise
NoYesApr 18, 2026
CVE-2026-40346MEDIUM6.4
  • JavaScriptJavaScript
  • @nocobase/plugin-workflow-request
NoYesApr 18, 2026

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Additional Wiz resources

Cloud Vulnerability DB

Cloud Vulnerability DB

A community-led vulnerabilities database

Cloud Threat Landscape

Cloud Threat Landscape

A threat intelligence database

PEACH

PEACH

A tenant isolation framework

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management
Get a demo