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CVE-2024-53986: rails-html-sanitizer has XSS vulnerability with certain configurations

December 2, 2024 (updated October 31, 2025)

There is a possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer 1.6.0 when used with Rails >= 7.1.0.

  • Versions affected: 1.6.0
  • Not affected: < 1.6.0
  • Fixed versions: 1.6.1

References

  • github.com/advisories/GHSA-638j-pmjw-jq48
  • github.com/rails/rails-html-sanitizer
  • github.com/rails/rails-html-sanitizer/commit/f02ffbb8465e73920b6de0da940f5530f855965e
  • github.com/rails/rails-html-sanitizer/security/advisories/GHSA-638j-pmjw-jq48
  • github.com/rubysec/ruby-advisory-db/blob/master/gems/rails-html-sanitizer/CVE-2024-53986.yml
  • nvd.nist.gov/vuln/detail/CVE-2024-53986

Code Behaviors & Features

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Affected versions

All versions starting from 1.6.0 before 1.6.1, version 1.6.0

Fixed versions

  • 1.6.1

Solution

Upgrade to version 1.6.1 or above.

Impact 6.1 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

gem/rails-html-sanitizer/CVE-2024-53986.yml

Spotted a mistake? Edit the file on GitLab.

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