node-forge is vulnerable to ASN.1 OID Integer Truncation
Summary
MITRE-Formatted CVE Description An Integer Overflow (CWE-190) vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft ASN.1 structures containing OIDs with oversized arcs. These arcs may be decoded as smaller, trusted OIDs due to 32-bit bitwise truncation, enabling the bypass of downstream OID-based security decisions.
Description
An ASN.1 OID Integer Truncation vulnerability exists in the node-forge asn1.derToOid function within forge/lib/asn1.js. OID components are decoded using JavaScript's bitwise left-shift operator (<<), which forcibly casts values to 32-bit signed integers. Consequently, if an attacker provides a mathematically unique, very large OID arc integer exceeding $2^{31}-1$, the value silently overflows and wraps around rather than throwing an error.
Impact
This vulnerability allows a specially crafted ASN.1 object to spoof an OID, where a malicious certificate with a massive, invalid OID is misinterpreted by the library as a trusted, standard OID, potentially bypassing security controls.
This vulnerability impacts the asn1.derToOid function in node-forge before patched version 1.3.2.
Any downstream application using this component is impacted. This component may be leveraged by downstream applications in ways that enables partial compromise of integrity, leading to potential availability and confidentiality compromises.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | node-forge | < 1.3.2 | 1.3.2 |
References
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-190- Platform
- npm
- Package
node-forge- Disclosed
- 26.11.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-65ch-62r8-g69g - CC BY 4.0
Vulnerability history: node-forge
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 15
- First → latest
- 09.2020 03.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 9
- Medium 3
- Low 3
Disclosures per year
- 2020: 1
- 2021: 0
- 2022: 7
- 2023: 0
- 2024: 0
- 2025: 3
- 2026: 4
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node-forge is vulnerable to ASN.1 OID Integer Truncation this entry
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