CVE-2026-44897
Mistune Heading ID Attribute has Injection XSS
6.1
MEDIUM
CVSS 3.1
EPSS 0.23%
描述
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.
如何修補 CVE-2026-44897
要修補 CVE-2026-44897,請將受影響套件升級到下列已修補版本。
- —升級至 3.2.1 或更新版本
- —升級至 3.2.1 或更新版本
CVE-2026-44897 正在被利用嗎?
低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 3.2.1
- from 0, < 3.2.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |