Improper neutralization of data URIs may allow XSS in rails-html-sanitizer
Summaryrails-html-sanitizer `>= 1.0.3, < 1.4.4` is vulnerable to cross-site scripting via data URIs when used in combination with Loofah `>= 2.1.0`.MitigationUpgrade to rails-html-sanitizer `>= 1.4.4`.SeverityThe maintainers have evaluated this as [Medium Severity 6.1](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).References[CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html)[SVG MIME Type (image/svg+xml) is misleading to developers · Issue #266 · w3c/svgwg](https://github.com/w3c/svgwg/issues/266)https://github.com/rails/rails-html-sanitizer/issues/135https://hackerone.com/reports/1694173CreditThis vulnerability was independently reported by Maciej Piechota (@haqpl) and Mrinmoy Das (@goromlagche).