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TI-2022-07573 Aliases CVE-2022-23514GHSA-486f-hjj9-9vhh

Inefficient Regular Expression Complexity in Loofah

Priority HIGH 72CWE-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

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah < 2.19.1 contains 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 is patched in version 2.19.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01829 78th percentileScored 2026-11-07
Fix Partial loofah (flavorjones): 2.19.1loofah (RubyGems): 2.19.1Red Hat: 1 advisoryRed Hat: 1 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
flavorjonesloofahbefore 2.19.12.19.1Patch availableCNA
—loofah (RubyGems)before 2.19.12.19.1Patch availableGHSA-486f-hjj9-9vhh
  • loofah Vendorflavorjones Affected before 2.19.1 Fixed in 2.19.1 Patch available CNA
  • loofah (RubyGems) Vendor— Affected before 2.19.1 Fixed in 2.19.1 Patch available GHSA-486f-hjj9-9vhh

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:loofah_project:loofah:*:*:*:*:*:ruby:*:*before 2.19.1Vulnerableflavorjones
  • cpe:2.3:a:loofah_project:loofah:*:*:*:*:*:ruby:*:* Versions before 2.19.1 Vulnerable ·flavorjones

Remediation

  • Fix · CNA loofah (flavorjones) Fixed in 2.19.1
  • Fix · GHSA-486f-hjj9-9vhh loofah (RubyGems) Fixed in 2.19.1 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-2022-23514
  2. 2026-10-03 Alias added: GHSA-486f-hjj9-9vhh

References

Advisory 3

Other 5

  • TI-2022-07575 Uncontrolled Recursion in Loofah CVSS 3.1HIGH 7.5
  • TI-2018-05825 In the Loofah gem through 2.2.0 for Ruby, non-whitelisted HTML attributes may occur in… CVSS 3.0MEDIUM 6.1
  • TI-2022-07577 Improper neutralization of data URIs allows XSS in rails-html-sanitizer CVSS 3.1MEDIUM 6.1
  • TI-2022-07574 Improper neutralization of data URIs may allow XSS in Loofah CVSS 3.1MEDIUM 6.1
  • TI-2019-11687 Cross-site scripting in Loofah CVSS 3.1MEDIUM 5.4
  • TI-2018-11810 Cross-site scripting in Loofah CVSS 3.0MEDIUM 5.4

Sources

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