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Sicherheitslücken in happy-dom

In den letzten 30 Tagen veröffentlichte Sicherheitslücken für happy-dom: 1. Davon im KEV-Katalog: 0.

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Sicherheitslücken: 6

  1. CVE-2026-115895

    Hoch · CVSS 8.8EPSS 0,56%Öffentlicher ExploitKorrektur verfügbar

    Happy DOM: Incomplete fix for CVE-2026-33943: unsanitized import alias leads to host code execution

    Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. From 17.0.0 until 21.0.4, packages/happy-dom/src/module/ECMAScriptModuleCompiler.ts accepts a named ESM import alias without validating that it is a JavaScript binding identifier before inserting it into a generated destructuring binding. With enableJavaScriptEvaluation enabled, attacker-controlled HTML or module source can use an invalid alias that becomes a valid default initializer after compilation, causing the generated JavaScript to execute in the Node.js host process. The demonstrated reachable path uses a JSON module import attribute, which

    happy-domNode.js
    • Auf 21.0.4 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  2. CVE-2026-34226

    Hoch · CVSS 7.5EPSS 0,61%Korrektur verfügbar

    Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies

    Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Versions prior to 20.8.9 may attach cookies from the current page origin (`window.location`) instead of the request target URL when `fetch(..., { credentials: "include" })` is used. This can leak cookies from origin A to destination B. Version 20.8.9 fixes the issue.

    happy-domNode.js
    • Auf 20.8.9 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  3. CVE-2026-33943

    Hoch · CVSS 8.8EPSS 1,01%Korrektur verfügbar

    Happy DOM ECMAScriptModuleCompiler: unsanitized export names are interpolated as executable code

    Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. In versions 15.10.0 through 20.8.7, a code injection vulnerability in `ECMAScriptModuleCompiler` allows an attacker to achieve Remote Code Execution (RCE) by injecting arbitrary JavaScript expressions inside `export { }` declarations in ES module scripts processed by happy-dom. The compiler directly interpolates unsanitized content into generated code as an executable expression, and the quote filter does not strip backticks, allowing template literal-based payloads to bypass sanitization. Version 20.8.8 fixes the issue.

    happy-domNode.js
    • Auf 20.8.8 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  4. CVE-2025-62410

    Kritisch · CVSS 9.4EPSS 0,35%Öffentlicher ExploitKorrektur verfügbar

    --disallow-code-generation-from-strings is not sufficient for isolating untrusted JavaScript in happy-dom

    In versions before 20.0.2, it was found that --disallow-code-generation-from-strings is not sufficient for isolating untrusted JavaScript in happy-dom. The untrusted script and the rest of the application still run in the same Isolate/process, so attackers can deploy prototype pollution payloads to hijack important references like "process" in the example below, or to hijack control flow via flipping checks of undefined property. This vulnerability is due to an incomplete fix for CVE-2025-61927. The vulnerability is fixed in 20.0.2.

    happy-domNode.js
    • Auf 20.0.2 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  5. CVE-2025-61927

    Hoch · CVSS 7.2EPSS 0,64%Öffentlicher ExploitKorrektur verfügbar

    Happy-DOM has VM Context Escape

    Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Happy DOM v19 and lower contains a security vulnerability that puts the owner system at the risk of RCE (Remote Code Execution) attacks. A Node.js VM Context is not an isolated environment, and if the user runs untrusted JavaScript code within the Happy DOM VM Context, it may escape the VM and get access to process level functionality. It seems like what the attacker can get control over depends on if the process is using ESM or CommonJS. With CommonJS the attacker can get hold of the `require()` function to import modules. Happy DOM has JavaScript

    happy-domNode.js
    • Auf 20.0.0 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  6. CVE-2024-51757

    Kritisch · CVSS 9.3EPSS 0,77%Korrektur verfügbar

    Fixes security vulnerability that allowed for server side code to be executed by a <script> tag

    happy-dom is a JavaScript implementation of a web browser without its graphical user interface. Versions of happy-dom prior to 15.10.2 may execute code on the host via a script tag. This would execute code in the user context of happy-dom. Users are advised to upgrade to version 15.10.2. There are no known workarounds for this vulnerability.

    happy-domNode.js
    • Auf 15.10.2 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

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