ADVISORIES

• CVE-2022-23518 (NVD)
• GHSA-mcvf-2q2m-x72m
• Vendor Advisory

GEM

rails-html-sanitizer

SEVERITY

CVSS v3.x: 6.1 (Medium)

UNAFFECTED VERSIONS

• < 1.0.3

PATCHED VERSIONS

• >= 1.4.4

DESCRIPTION

Summary

rails-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.

Mitigation

Upgrade to rails-html-sanitizer >= 1.4.4.

RELATED

• https://cwe.mitre.org/data/definitions/79.html
• https://github.com/w3c/svgwg/issues/266
• https://github.com/rails/rails-html-sanitizer/issues/135
• https://hackerone.com/reports/1694173