CVE-2024-34078
html-sanitizer allows arbitrary HTML present after sanitization because of unicode normalization
- State
- Published
- Severity
- 6.1 Medium
- Published
- May 6, 2024
- Updated
- Aug 26, 2024
- Reserved
- Apr 30, 2024
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | GitHub_M |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
html-sanitizermatthiask |
|
References
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