CVE-2025-66031: node-forge has ASN.1 Unbounded Recursion

November 26, 2025

An Uncontrolled Recursion (CWE-674) vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft deep ASN.1 structures that trigger unbounded recursive parsing. This leads to a Denial-of-Service (DoS) via stack exhaustion when parsing untrusted DER inputs.

References

github.com/advisories/GHSA-554w-wpv2-vw27
github.com/digitalbazaar/forge
github.com/digitalbazaar/forge/commit/260425c6167a38aae038697132483b5517b26451
github.com/digitalbazaar/forge/security/advisories/GHSA-554w-wpv2-vw27
nvd.nist.gov/vuln/detail/CVE-2025-66031

Code Behaviors & Features

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