CVE-2024-34078
Medium
Description
html-sanitizer is an allowlist-based HTML cleaner. If using `keep_typographic_whitespace=False` (which is the default), the sanitizer normalizes unicode to the NFKC form at the end. Some unicode characters normalize to chevrons; this allows specially crafted HTML to escape sanitization. The problem has been fixed in 2.4.2.
SeverityMedium
CVSS6.1
Exploit probability—
ProductHtml-sanitizer
PublishedMay 6, 2024
First seenMay 6, 2024
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- html-sanitizer2.4.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| html-sanitizerPyPI | v < 2.4.2 | 2.4.2 |
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