CVE-2026-41238

Katalog CVE

CVSS 6.9 · Medium EPSS 0,35%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). Skor CVSS 3.1 6.9 (Medium) menurut github.com.

Deskripsi (NVD)

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Versions 3.0.1 through 3.3.3 are vulnerable to a prototype pollution-based XSS bypass. When an application uses `DOMPurify.sanitize()` with the default configuration (no `CUSTOM_ELEMENT_HANDLING` option), a prior prototype pollution gadget can inject permissive `tagNameCheck` and `attributeNameCheck` regex values into `Object.prototype`, causing DOMPurify to allow arbitrary custom elements with arbitrary attributes — including event handlers — through sanitization. Version 3.4.0 fixes the issue.

Rincian

Terbit di NVD

23 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Deferred

CVSS 3.1

6.9 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

EPSS (30 hari)

0,35% peluang dieksploitasi; lebih tinggi dari 26,3% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/cure53/DOMPurify/releases/tag/3.4.0
• https://github.com/cure53/DOMPurify/security/advisories/GHSA-v9jr-rg53-9pgp