GHSA-4p64-v8f5-r2gx
Medium · 5.4Multiple security fixes in justhtml
CVSS
5.4
EPSS
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Published
Apr 14, 2026
CISA due date
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The record
`justhtml` `1.16.0` fixes multiple security issues in sanitization, serialization, and programmatic DOM handling. Most of these issues affected one of these advanced paths rather than ordinary parsed HTML with the default safe settings: - programmatic DOM input to `sanitize()` or `sanitize_dom()` - reused or mutated sanitization policy objects - custom policies that preserve foreign namespaces such as SVG or MathML
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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