# CVE-2018-11627: ruby-rack-protection: Sinatra before 2.0.2 has XSS via the 400 Bad Request page that occurs upon a params parser exception.

CVE-2018-11627 is fixed in 3 products on 1 platform, first by ruby-rack-protection 2.0.8.1-1, released May 31, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-11627
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0216
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 31, 2018

## Description

Sinatra before 2.0.2 has XSS via the 400 Bad Request page that occurs upon a params parser exception.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ruby-rack-protection Ubuntu 20.04 LTS (focal) | 2.0.8.1-1 | [ruby-rack-protection 2.0.8.1-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ruby-rack-protection-2.0.8.1-1.md) | May 31, 2018 |
| Linux | ruby-rack-protection Ubuntu 22.04.1 LTS (jammy) | 2.0.8.1-2 | [ruby-rack-protection 2.0.8.1-2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ruby-rack-protection-2.0.8.1-2.md) | May 31, 2018 |
| Linux | ruby-sinatra Ubuntu 20.04 LTS (focal) | 2.0.8.1-1 | [ruby-sinatra 2.0.8.1-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ruby-sinatra-2.0.8.1-1.md) | May 31, 2018 |
| Linux | ruby-sinatra Ubuntu 22.04.1 LTS (jammy) | 2.0.8.1-2 | [ruby-sinatra 2.0.8.1-2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ruby-sinatra-2.0.8.1-2.md) | May 31, 2018 |
| Linux | ruby-sinatra-contrib Ubuntu 20.04 LTS (focal) | 2.0.8.1-1 | [ruby-sinatra-contrib 2.0.8.1-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ruby-sinatra-contrib-2.0.8.1-1.md) | May 31, 2018 |
| Linux | ruby-sinatra-contrib Ubuntu 22.04.1 LTS (jammy) | 2.0.8.1-2 | [ruby-sinatra-contrib 2.0.8.1-2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ruby-sinatra-contrib-2.0.8.1-2.md) | May 31, 2018 |

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