CVE-2026-59929: mistune project mistune

csirt@kutim:~/threat-intel/cve/CVE-2026-59929

CVSS 6.1 · Medium EPSS 0,34%

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

Deskripsi (NVD)

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the safe_url filter in src/mistune/renderers/html.py blocks only javascript:, vbscript:, file:, and data: schemes, allowing legacy or chained schemes such as feed:, view-source:, jar:, livescript:, mocha:, ms-its:, mk:, and res: to reach rendered href and src attributes and potentially execute script in affected user agents. This issue is fixed in version 3.3.0.

Rincian

Terbit di NVD: 8 Juli 2026
Terakhir diubah: 9 Juli 2026
Status NVD: Analyzed
CVSS 3.1: 6.1 (Medium), sumber github.com
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')
CWE-184: Incomplete List of Disallowed Inputs
EPSS (30 hari): 0,34% peluang dieksploitasi; lebih tinggi dari 25,7% 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/commit/c7101fcbb6e8790e8e39157c5ca2238fc6dd6cbc patch
https://github.com/lepture/mistune/security/advisories/GHSA-qfrw-5rxm-mhh2 exploit · advisory pihak ketiga
https://github.com/lepture/mistune/releases/tag/v3.3.0 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.