CVE-2026-59926: mistune project mistune

csirt@kutim:~/threat-intel/cve/CVE-2026-59926

CVSS 6.1 · Medium EPSS 0,33%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada mistune project mistune. Skor CVSS 3.1 6.1 (Medium) menurut NVD.

Deskripsi (NVD)

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, render_admonition() in src/mistune/directives/admonition.py concatenates the Admonition directive :class: option into the HTML class attribute without escaping, allowing attribute injection and cross-site scripting even when HTMLRenderer escape mode is enabled. This issue is fixed in version 3.2.1.

Rincian

Terbit di NVD: 8 Juli 2026
Terakhir diubah: 9 Juli 2026
Status NVD: Analyzed
CVSS 3.1: 6.1 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS (30 hari): 0,33% peluang dieksploitasi; lebih tinggi dari 23,9% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
mistune project	mistune	Semua versi sebelum 3.3.0

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/lepture/mistune/security/advisories/GHSA-g97x-gvcm-x72h advisory vendor
https://github.com/lepture/mistune/commit/a3cb6e5655308797e8be021d6c7b5bab13cbace2 patch
https://github.com/lepture/mistune/releases/tag/v3.2.1 release notes

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.