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Vulnerability Intelligence
Miggo AI
Miggo AIMiggo AIMiggo AIRoot Cause AnalysisThe vulnerability stems from missing data URI validation in rails-html-sanitizer's attribute scrubbing logic. The GitHub issue #135 specifically shows the PermitScrubber's scrub_attribute() method (lines 142-154 in scrubbers.rb) lacks the safe data URI checks present in Loofah's implementation. This allows XSS via crafted data:text/html and data:application/vnd.wap.xhtml+xml URIs. The test case demonstrates the sanitizer fails to remove dangerous data URIs in iframe src attributes when allowed tags/attributes are permitted.
RubyRuby| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| rails-html-sanitizer | rubygems | >= 1.0.3, < 1.4.4 | 1.4.4 |
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