CVE-2026-28348
lxml-html-clean has CSS @import Filter Bypass via Unicode Escapes
6.1
MEDIUM
CVSS 3.1
EPSS 0.23%
描述
lxml_html_clean is a project for HTML cleaning functionalities copied from `lxml.html.clean`. Prior to version 0.4.4, the _has_sneaky_javascript() method strips backslashes before checking for dangerous CSS keywords. This causes CSS Unicode escape sequences to bypass the @import and expression() filters, allowing external CSS loading or XSS in older browsers. This issue has been patched in version 0.4.4.
如何修補 CVE-2026-28348
要修補 CVE-2026-28348,請將受影響套件升級到下列已修補版本。
- —升級至 0.4.4 或更新版本
- —升級至 0.4.4 或更新版本
CVE-2026-28348 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, < 0.4.4
- from 0, < 0.4.4
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 |