Vulnerability Details CVE-2018-3741
There is a possible XSS vulnerability in all rails-html-sanitizer gem versions below 1.0.4 for Ruby. The gem allows non-whitelisted attributes to be present in sanitized output when input with specially-crafted HTML fragments, and these attributes can lead to an XSS attack on target applications. This issue is similar to CVE-2018-8048 in Loofah. All users running an affected release should either upgrade or use one of the workarounds immediately.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 59.4%
CVSS Severity
CVSS v3 Score 6.1
CVSS v2 Score 4.3
References
Products affected by CVE-2018-3741
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cpe:2.3:a:rubyonrails:html_sanitizer:1.0.0
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cpe:2.3:a:rubyonrails:html_sanitizer:1.0.1
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cpe:2.3:a:rubyonrails:html_sanitizer:1.0.2
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cpe:2.3:a:rubyonrails:html_sanitizer:1.0.3