CVE-2026-119186

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    CVE-2026-119186

    Published: 29 Oct 2026Last Modified: 1 Nov 2026

    Summary: Forge: AES-GCM authentication bypass via unvalidated tagLength option

    Details: Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, node-forge did not validate the AES-GCM tagLength option passed to start() during decryption through forge.cipher.createDecipher(). When an application derived tagLength from received data or used an unset or zero-like configuration value, a value that converted to zero together with an empty or missing authentication tag caused the calculated and supplied tags to compare as empty, so decipher.finish() accepted unauthenticated ciphertext. Applications that omit tagLength to use the 128-bit default or pass a fixed valid tag length are unaffected. This issue is fixed in version 1.4.1.

    References: https://github.com/digitalbazaar/forge/releases/tag/v1.4.1, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119186.json, https://github.com/digitalbazaar/forge/security/advisories/GHSA-5cwg-6vw7-rj6p, https://nvd.nist.gov/vuln/detail/CVE-2026-119186, https://github.com/digitalbazaar/forge/commit/236845d96c71207259f91638d0138bba8e2fd624

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -8a917370ec51731e817c2d547b7329a58f8210af

    Affected versions

    v1.4.0

    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
    CVE-2026-119186 | CVE-DB