CVE-2026-6827
CVE-2026-6827 · justhtml before 1.17.0 Multiple Cross-Site Scripting Vulnerabilities
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
justhtml before 1.17.0 contains multiple security issues in sanitization, serialization, and programmatic DOM handling. When custom policies preserve foreign namespaces (SVG/MathML), dangerous content such as HTML integration points (SVG <foreignObject>, MathML <annotation-xml encoding="text/html">) and mutation-XSS parser-differential payloads could survive sanitization and become active HTML after reparse; SVG filter="url(...)" and preserved <style> could leave resource-loading CSS (@import, background-image:url()). Programmatic script/style/Comment nodes could serialize into active markup. Additional hardening fixes address sanitize-pipeline cache mutation and DOM parent/child cycles that could cause infinite loops. Most issues affect advanced or custom configurations rather than the default JustHTML(..., sanitize=True) safe path.
CVSS 5.1 · Media · EPSS 0,3% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: python
Productos y versiones afectados
justhtml
- Versiones
- ≥ 0, < 1.17.0: Afectada (semver)
- 1.17.0: No afectada (semver)
Actualiza a 1.17.0
justhtml PyPI
- Versiones
- 0.1.0
- 0.10.0
- 0.11.0
- 0.12.0
- 0.13.0
- 0.13.1
- 0.14.0
- 0.15.0
- 0.16.0
- 0.17.0
- 0.18.0
- 0.19.0
- 0.2.0
- 0.20.0
- 0.21.0
- 0.22.0
- 0.23.0
- 0.24.0
- 0.25.0
- 0.26.0
- 0.27.0
- 0.28.0
- 0.29.0
- 0.3.0
- 0.30.0
- 0.31.0
- 0.32.0
- 0.33.0
- 0.34.0
- 0.35.0
- 0.36.0
- 0.37.0
- 0.38.0
- 0.39.0
- 0.4.0
- 0.40.0
- 0.5.0
- 0.5.1
- 0.5.2
- 0.6.0
- 0.7.0
- 0.8.0
- 0.9.0
- 1.0.0
- 1.1.0
- 1.10.0
- 1.11.0
- 1.12.0
- 1.13.0
- 1.14.0
- 1.15.0
- 1.16.0
- 1.2.0
- 1.3.0
- 1.4.0
- 1.5.0
- 1.6.0
- 1.7.0
- 1.8.0
- 1.9.0
- 1.9.1
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.17.0
Actualiza a 1.17.0