VulnerabilityDeferred
CVE-2024-34078
html-sanitizer is an allowlist-based HTML cleaner.
MEDIUM 6.1EPSS 0.55%
Does this matter?
Lower severity and a low EPSS score (0.55%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.55% probability · 44th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security-advisories@github.com
References
- https://github.com/matthiask/html-sanitizer/commit/48db42fc5143d0140c32d929c46b802f96913550
- https://github.com/matthiask/html-sanitizer/security/advisories/GHSA-wvhx-q427-fgh3
- https://github.com/matthiask/html-sanitizer/commit/48db42fc5143d0140c32d929c46b802f96913550
- https://github.com/matthiask/html-sanitizer/security/advisories/GHSA-wvhx-q427-fgh3
- https://lists.debian.org/debian-lts-announce/2024/08/msg00000.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.