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TI-2022-07576 Aliases CVE-2022-23517GHSA-5x79-w82f-gw8w

Inefficient Regular Expression Complexity in rails-html-sanitizer

Priority MEDIUM 42CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 1 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-1333.

Summary

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain configurations of rails-html-sanitizer < 1.4.4 use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue has been patched in version 1.4.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01578 75th percentileScored 2026-11-07
Fix Partial rails-html-sanitizer (rails): 1.4.4rails-html-sanitizer (RubyGems): 1.4.4Red Hat: 1 advisoryRed Hat: 1 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Railsrails-html-sanitizerbefore 1.4.41.4.4Patch availableCNA
—rails-html-sanitizer (RubyGems)before 1.4.41.4.4Patch availableGHSA-5x79-w82f-gw8w
  • rails-html-sanitizer VendorRails Affected before 1.4.4 Fixed in 1.4.4 Patch available CNA
  • rails-html-sanitizer (RubyGems) Vendor— Affected before 1.4.4 Fixed in 1.4.4 Patch available GHSA-5x79-w82f-gw8w

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:rubyonrails:rails_html_sanitizers:*:*:*:*:*:rails:*:*before 1.4.4VulnerableRails
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:rubyonrails:rails_html_sanitizers:*:*:*:*:*:rails:*:* Versions before 1.4.4 Vulnerable ·Rails
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

  • Fix · CNA rails-html-sanitizer (rails) Fixed in 1.4.4
  • Fix · GHSA-5x79-w82f-gw8w rails-html-sanitizer (RubyGems) Fixed in 1.4.4 Advisory →

Red Hat 1 advisory

  • RHSA-2023:2097 Released 2023-05-03 · Red Hat rating Important
    Satellite 6.13 Release
    • Red Hat Satellite 6.13 for RHEL 8 ansible-collection-redhat-satellite-3.9.0-2.el8sat, ansible-collection-redhat-satellite_operations-1.3.0-2.el8sat, ansible-lint-5.0.8-4.el8pc +47

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat 3scale API Management Platform 2AffectedNo fix planned: Will not fix
Red Hat Satellite 6AffectedNo fix yet
Red Hat Satellite 6.13 for RHEL 8Fixed RHSA-2023:2097
Not affected: 1 product
  • Red Hat Satellite 6.13 for RHEL 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-23517
  2. 2026-10-03 Alias added: GHSA-5x79-w82f-gw8w

References

Patch 1

Advisory 4

Other 3

  • TI-2022-13919 Cross-site scripting in https://github.com/rails/rails-html-sanitizer CVSS 3.1MEDIUM 6.1
  • TI-2024-36144 Possible XSS vulnerability with certain configurations of rails-html-sanitizer 1.6.0 CVSS 4.0LOW 2.3
  • TI-2022-07578 Possible XSS vulnerability with certain configurations of rails-html-sanitizer CVSS 3.1HIGH 7.2
  • TI-2022-07579 rails-html-sanitizer contains an incomplete fix for an XSS vulnerability CVSS 3.1MEDIUM 6.1
  • TI-2022-07577 Improper neutralization of data URIs allows XSS in rails-html-sanitizer CVSS 3.1MEDIUM 6.1
  • TI-2024-36148 Possible XSS vulnerability with certain configurations of rails-html-sanitizer 1.6.0 CVSS 4.0LOW 2.3
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences