HTML Injection Affecting sanitize package, versions <4.6.3
Threat Intelligence
EPSS
0.14% (51st
percentile)
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Test your applications- Snyk ID SNYK-RUBY-SANITIZE-22024
- published 21 Mar 2018
- disclosed 19 Mar 2018
- credit Shopify Application Security Team
Introduced: 19 Mar 2018
CVE-2018-3740 Open this link in a new tabHow to fix?
Upgrade sanitize to version 4.6.3 or higher.
Overview
sanitize is a whitelist-based HTML and CSS sanitizer.
When used in combination with libxml2 versions >= 2.9.2, a specially crafted HTML fragment can cause libxml2 to generate improperly escaped output, allowing non-whitelisted attributes to be used on whitelisted elements. This can allow HTML and JavaScript injection, which could result in XSS if Sanitize's output is served to browsers.
Timeline
- 2018-03-19: Reported by Shopify Application Security Team via email
- 2018-03-19: Sanitize 4.6.3 released with a fix
- 2018-03-19: Initial vulnerability report published
References
CVSS Scores
version 3.1