CVE-2018-3741
MEDIUM6.1EPSS 0.12%rails-html-sanitizer Cross-site Scripting vulnerability
Published: 4/26/2018Modified: 4/28/2026
Description
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.
Affected packages (2)
- Debian/ruby-rails-html-sanitizerfrom 0, < 1.0.4-1
- RubyGems/rails-html-sanitizerfrom 0, < 1.0.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |