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[ CVE-2026-118775 · Published 29 Oct 2026 ]

Forge: ASN.1 OID first arc truncation in asn1.oidToDer

CVSS 5.3 EPSS <1%Fix available

[ Why it matters ]Priority signals

  • Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, asn1.oidToDer() in lib/asn1.js did not range-check the first two arcs of an OID. An application that accepted an untrusted OID string, checked or authorized that string, and then encoded it with asn1.oidToDer() could emit DER representing a different, trusted OID from the one that was checked. DER parsing is not affected. This issue is fixed in version 1.4.1.

[ Fixes ]Fixes and patches

  • node-forge 1.4.1Fixed version · GitHub Advisories · npm package node-forge: upgrade to 1.4.1 or later (affected <= 1.4.0)
  • Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Packages ]Affected open-source packages

[ References ]References