CVE-2026-34401

Katalog CVE

CVSS 6.5 · Medium EPSS 1,4%

Kerentanan Improper Restriction of XML External Entity Reference pada microsoft xml notepad. Skor CVSS 3.1 6.5 (Medium) menurut github.com.

Deskripsi (NVD)

XML Notepad is a Windows program that provides a simple intuitive User Interface for browsing and editing XML documents. Prior to version 2.9.0.21, XML Notepad does not disable DTD processing by default which means external entities are resolved automatically. There is a well known attack related to malicious DTD files where an attacker to craft a malicious XML file that loads a DTD that causes XML Notepad to make outbound HTTP/SMB requests, potentially leaking local file contents or capturing the victim's NTLM credentials. This issue has been patched in version 2.9.0.21.

Rincian

Terbit di NVD

31 Maret 2026

Terakhir diubah

24 Juli 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-611: Improper Restriction of XML External Entity Reference

EPSS (30 hari)

1,4% peluang dieksploitasi; lebih tinggi dari 71,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/microsoft/XmlNotepad/security/advisories/GHSA-5j32-486h-42ch mitigasi · advisory vendor
• https://github.com/microsoft/XmlNotepad/commit/3665603d61ba10b7827a3724e854748cb780140c patch
• https://github.com/microsoft/XmlNotepad/commit/c03ab2311ac6960452eb1ab49098768f851dcc53 patch
• https://github.com/microsoft/XmlNotepad/releases/tag/2.9.0.21 product · release notes