CVE-2026-26278

naturalintelligence fast-xml-parser

TLP:CLEAR

csirt@kutim:~/threat-intel/cve/CVE-2026-26278

Katalog CVE

CVSS 7.5 · High EPSS 0,99%

Kerentanan Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') pada naturalintelligence fast-xml-parser. Skor CVSS 3.1 7.5 (High) menurut github.com.

Deskripsi (NVD)

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. In versions 4.1.3 through 5.3.5, the XML parser can be forced to do an unlimited amount of entity expansion. With a very small XML input, it’s possible to make the parser spend seconds or even minutes processing a single request, effectively freezing the application. Version 5.3.6 fixes the issue. As a workaround, avoid using DOCTYPE parsing by `processEntities: false` option.

Rincian

Terbit di NVD
19 Februari 2026
Terakhir diubah
10 September 2026
Status NVD
Modified
CVSS 3.1
7.5 (High), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
EPSS (30 hari)
0,99% peluang dieksploitasi; lebih tinggi dari 61,5% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
naturalintelligence fast-xml-parser Versi 4.1.3 hingga sebelum 5.3.6

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.