GHSA-q42p-pg8m-cqh6

    Dashboard / Vulnerabilities / GHSA-q42p-pg8m-cqh6

    GHSA-q42p-pg8m-cqh6

    Published: 5 Jun 2019Last Modified: 10 Sept 2026

    Summary: Prototype Pollution in handlebars

    Details: Versions of `handlebars` prior to 4.0.14 are vulnerable to Prototype Pollution. Templates may alter an Objects' prototype, thus allowing an attacker to execute arbitrary code on the server. ## Recommendation For handlebars 4.1.x upgrade to 4.1.2 or later. For handlebars 4.0.x upgrade to 4.0.14 or later.

    References: https://github.com/handlebars-lang/handlebars.js/issues/1495, https://github.com/handlebars-lang/handlebars.js/commit/0d6d8c335ad81bad1b672fc56b6a44f6aa472dac, https://github.com/handlebars-lang/handlebars.js/commit/7372d4e9dffc9d70c09671aa28b9392a1577fd86, https://github.com/handlebars-lang/handlebars.js/commit/85c8783b34fc6d36145d8b53885ad0b9e3c3f9c4, https://github.com/handlebars-lang/handlebars.js/commit/cd38583216dce3252831916323202749431c773e, https://snyk.io/vuln/SNYK-JS-HANDLEBARS-173692, https://www.npmjs.com/advisories/755

    Affected packages

    Package

    Name: handlebars

    Purl: pkg:npm/handlebars

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 4.1.0
    Fixed -4.1.2

    Affected versions

    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