### [CVE-2018-3741](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3741)
![](https://img.shields.io/static/v1?label=Product&message=rails-html-sanitizer&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Improper%20Neutralization%20of%20Input%20During%20Web%20Page%20Generation%20('Cross-site%20Scripting')%20(CWE-79)&color=brighgreen)

### 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.

### POC

#### Reference
- https://hackerone.com/reports/328270

#### Github
- https://github.com/KorayAgaya/TrivyWeb
- https://github.com/Mohzeela/external-secret
- https://github.com/Shreda/todoappnotes
- https://github.com/siddharthraopotukuchi/trivy
- https://github.com/simiyo/trivy
- https://github.com/t31m0/Vulnerability-Scanner-for-Containers
- https://github.com/umahari/security