CyberSecBulletin

Capricorn86 vulnerabilities

We track 8 vulnerabilities in Capricorn86 products. 8 are rated high or critical, and none are known to be exploited. The most recent was published on October 28, 2026.

8vulnerabilities
3critical
5high
0exploited
8.5average CVSS score

Latest Capricorn86 vulnerabilities

  • 8.6 High severity

    happy-dom: Server-Side Request Forgery

    CVE-2026-118660Capricorn86

    Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 21.0.0, Happy DOM loads iframe src URLs and link rel="stylesheet" href URLs by default while parsing untrusted HTML on the server because disableIframePage

  • 7.5 High severity

    happy-dom: Server-Side Request Forgery

    CVE-2026-118659Capricorn86

    Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 21.0.2, the Happy DOM server-renderer package's ServerRendererServer accepts unauthenticated HTTP/2 requests and resolves attacker-controlled :path values

  • 8.8 High severity

    happy-dom: Improper Control of Generation of Code

    CVE-2026-115895Capricorn86

    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 bind

  • 7.5 High severity

    happy-dom: Insertion of Sensitive Information Into Sent Data

    CVE-2026-34226Capricorn86

    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: "incl

  • 9.8 Critical severity

    happy-dom: Improper Control of Generation of Code

    CVE-2026-33943Capricorn86

    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 inject

  • 9.4 Critical severity

    happy-dom: Improperly Controlled Modification of Object Prototype Attributes

    CVE-2025-62410Capricorn86

    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

  • 7.2 High severity

    happy-dom: Improper Control of Generation of Code

    CVE-2025-61927Capricorn86

    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

  • 9.3 Critical severity

    happy-dom: Improper Neutralization of Input During Web Page Generation

    CVE-2024-51757Capricorn86

    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