CVE-2026-33943

Katalog CVE

CVSS 9.8 · Critical EPSS 0,97%

Kerentanan Improper Control of Generation of Code ('Code Injection') pada capricorn86 happy dom. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

27 Maret 2026

Terakhir diubah

15 Juli 2026

Status NVD

Modified

CVSS 3.1

9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-94: Improper Control of Generation of Code ('Code Injection')
CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')

EPSS (30 hari)

0,97% peluang dieksploitasi; lebih tinggi dari 60,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/capricorn86/happy-dom/security/advisories/GHSA-6q6h-j7hj-3r64 exploit · advisory vendor
• https://github.com/capricorn86/happy-dom/commit/5437fdf8f13adb9590f9f52616d9f69c3ee8db3c patch
• https://github.com/capricorn86/happy-dom/releases/tag/v20.8.8 product · release notes
• https://access.redhat.com/security/cve/CVE-2026-33943
• https://bugzilla.redhat.com/show_bug.cgi?id=2452522
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33943.json