Summary
Loofah >= 2.1.0, < 2.19.1 is vulnerable to cross-site scripting via the image/svg+xml media type in data URIs.
Mitigation
Upgrade to Loofah >= 2.19.1.
Severity
The Loofah maintainers have evaluated this as Medium Severity 6.1.
References
- CWE – CWE-79: Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’) (4.9)
- SVG MIME Type (image/svg+xml) is misleading to developers · Issue #266 · w3c/svgwg
- https://hackerone.com/reports/1694173
- https://github.com/flavorjones/loofah/issues/101
Credit
This vulnerability was responsibly reported by Maciej Piechota (@haqpl).
References
- https://github.com/flavorjones/loofah/security/advisories/GHSA-228g-948r-83gx
- https://github.com/flavorjones/loofah/issues/101
- https://github.com/w3c/svgwg/issues/266
- https://github.com/flavorjones/loofah/commit/415677f3cf7f9254f42f811e784985cd63c7407f
- https://hackerone.com/reports/1694173
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2022-23515.yml
- https://nvd.nist.gov/vuln/detail/CVE-2022-23515
- https://github.com/advisories/GHSA-228g-948r-83gx