Loading...
Skip to main content
GeekWala

CVE-2022-23514 — Vulnerability in loofah — CVE Details

HIGH

Inefficient Regular Expression Complexity in Loofah

Published December 13, 2022Updated November 4, 2025Source: osv

Summary

## Summary 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. ## Mitigation Upgrade to Loofah `>= 2.19.1`. ## Severity The Loofah maintainers have evaluated this as [High Severity 7.5 (CVSS3.1)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). ## References - [CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)](https://cwe.mitre.org/data/definitions/1333.html) - https://hackerone.com/reports/1684163 ## Credit This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).

Advisory Timeline

  • First published December 13, 2022 (1399 days ago).
  • Last revised November 4, 2025 — 1057 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler
Update loofah to 2.19.1 or later
gem install loofah -v 2.19.1

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

PackageEcosystemAffectedFixed In
loofah
rubygems
0.2.0, 0.2.1, 0.2.2, 0.3.0 (+45 more)2.19.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

References

Frequently Asked Questions

What is CVE-2022-23514?
Inefficient Regular Expression Complexity in Loofah This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2022-23514?
CVE-2022-23514 affects loofah. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2022-23514 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-486f-hjj9-9vhh

Related CVEs

Check if you're affected

Scan your dependencies to see if this vulnerability affects your projects.

Scan Your Dependencies