# CVE-2018-3741: rails-html-sanitizer Cross-site Scripting vulnerability

Source: https://junglewise.ai/threats/cve-2018-3741-rails-html-sanitizer-cross-site-scripting-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2018-04-26  
License: CC BY 4.0 with a link back

CVE-2018-3741 · Severity: low · CVSS 3.1 · Published 2018-04-26

rails-html-sanitizer Cross-site Scripting vulnerability

Technologies: [rails-html-sanitizer (RubyGems)](https://junglewise.ai/threats/technologies/rails-html-sanitizer). Vendors: [RubyGems](https://junglewise.ai/threats/vendors/rubygems).

## Quick answers

**Is CVE-2018-3741 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2018-3741 being exploited in the wild.

**How severe is CVE-2018-3741?** Low severity, with a CVSS score of 3.1, published 26 April 2018.

**Which products and versions are affected?** rails-html-sanitizer (RubyGems) ECOSYSTEM:introduced=0,fixed=1.0.4.

**Is there a fix for CVE-2018-3741?** Yes. rails-html-sanitizer (RubyGems): upgrade to 1.0.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2018-3741?** Check whether you run rails-html-sanitizer (RubyGems) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- rails-html-sanitizer (RubyGems): upgrade to 1.0.4 or later

  ```sh
  bundle update rails-html-sanitizer
  ```


## Affected products

- rails-html-sanitizer (RubyGems) ECOSYSTEM:introduced=0,fixed=1.0.4

## Identifiers

- CVE-2018-3741
- GHSA-px3r-jm9g-c8w8

## Related threats

- [Rails HTML Sanitizers: Possible XSS vulnerability with certain configurations](https://junglewise.ai/threats/cve-2026-73648-rails-html-sanitizers-possible-xss-vulnerability-with-certain)
- [rails-html-sanitizer has XSS vulnerability with certain configurations](https://junglewise.ai/threats/cve-2024-53989-rails-html-sanitizer-has-xss-vulnerability-with-certain)
- [rails-html-sanitizer has XSS vulnerability with certain configurations](https://junglewise.ai/threats/cve-2024-53987-rails-html-sanitizer-has-xss-vulnerability-with-certain)
- [rails-html-sanitizer has XSS vulnerability with certain configurations](https://junglewise.ai/threats/cve-2024-53988-rails-html-sanitizer-has-xss-vulnerability-with-certain)
- [rails-html-sanitizer has XSS vulnerability with certain configurations](https://junglewise.ai/threats/cve-2024-53986-rails-html-sanitizer-has-xss-vulnerability-with-certain)