# CVE-2022-23519: ruby-rails-html-sanitizer: rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications

CVE-2022-23519 is fixed in ruby-rails-html-sanitizer on 1 platform, first by DEBIAN-CVE-2022-23519, released December 14, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-23519
- Priority: Routine
- CVSS: 6.1 (medium)
- EPSS: 0.0106
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 14, 2022

## Description

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer's allowed tags in either of the following ways: allow both "math" and "style" elements,  or allow both "svg" and "style" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include "math" or "svg" and "style" should either upgrade or use the following workaround immediately: Remove "style" from the overridden allowed tags, or remove "math" and "svg" from the overridden allowed tags.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ruby-rails-html-sanitizer Debian 12.15 (bookworm) | 1.4.4-1 | [DEBIAN-CVE-2022-23519](https://patchblox.com/security/data/fix/linux/debian-cve-2022-23519.md) | Dec 14, 2022 |
| Linux | ruby-rails-html-sanitizer Debian 13.5 (trixie) | 1.4.4-1 | [DEBIAN-CVE-2022-23519](https://patchblox.com/security/data/fix/linux/debian-cve-2022-23519.md) | Dec 14, 2022 |
| Linux | ruby-rails-html-sanitizer Debian 14 | 1.4.4-1 | [DEBIAN-CVE-2022-23519](https://patchblox.com/security/data/fix/linux/debian-cve-2022-23519.md) | Dec 14, 2022 |

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