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    CVE-2026-85393

    node-forge through 1.4.0 fails to validate element count in nested DigestAlgorithm sequences during RSA PKCS#1 v1.5 signature verification. Attackers can embed garbage bytes inside the DigestAlgorithm sequence to forge valid signatures for arbitrary messages using low-exponent RSA keys. This is an incomplete fix for CVE-2026-33894.

    Published:Sep 3, 2026
    Last Modified:Sep 3, 2026
    EPS:Sep 3, 2026
    EPSS Score:
    CVSS Score:7.5

    Affected Products

    Vendor
    Digitalbazaar
    Product
    Forge

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-463 Padding Oracle Crypto Attack
    CAPEC-475 Signature Spoofing by Improper Validation

    Related CVEs

    CVE-2026-33896 (CVSS 7.4) — Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior t…
    CVE-2026-33895 (CVSS 7.5) — Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior t…
    CVE-2026-33894 (CVSS 7.5) — Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior t…
    CVE-2026-33891 (CVSS 7.5) — Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior t…
    CVE-2025-66030 (CVSS 6.3) — Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Inte…
    CVE-2025-66031 (CVSS 8.7) — Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Unco…
    CVE-2025-12816 (CVSS 8.6) — An interpretation-conflict (CWE-436) vulnerability in node-forge versions 1.3.1 and earlier enables unauthenti…
    CVE-2022-24772 (CVSS 7.5) — Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior t…
    CVE-2022-24771 (CVSS 7.5) — Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior t…
    CVE-2022-24773 (CVSS 5.3) — Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior t…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High