CVE-2026-44897

Katalog CVE

CVSS 6.1 · Medium EPSS 0,27%

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 3.2.1, HTMLRenderer.heading() builds the opening <hN> tag by string-concatenating the id attribute value directly into the HTML — with no call to escape(), safe_entity(), or any other sanitisation function. A double-quote character " in the id value terminates the attribute, allowing an attacker to inject arbitrary additional attributes (event handlers, src=, href=, etc.) into the heading element. This vulnerability is fixed in 3.2.1.

Rincian

Terbit di NVD

26 Mei 2026

Terakhir diubah

24 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')

EPSS (30 hari)

0,27% peluang dieksploitasi; lebih tinggi dari 18,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/lepture/mistune/security/advisories/GHSA-v87v-83h2-53w7 exploit · advisory vendor
• https://github.com/lepture/mistune/releases/tag/v3.2.1 product · release notes