CVE-2022-23516

Uncontrolled Recursion in Loofah

Published Dec 14, 2022 CVSS 3.1 · 7.5 High EPSS 1.2% KEV · Not listed
Description
Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it susceptible to stack exhaustion and raising a SystemStackError exception. This may lead to a denial of service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are sanitized.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3565-1 ruby-loofah security update
Debian DLA Debian DLA DLA-3901-1 ruby-loofah security update
EUVD EUVD EUVD-2022-7493 Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it susceptible to stack exhaustion and raising a SystemStackError exception. This may lead to a denial of service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are sanitized.
Github GHSA Github GHSA GHSA-3x8r-x6xp-q4vm Uncontrolled Recursion in Loofah
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Nov 3, 2025, 9:45 PM
Reserved
Jan 19, 2022, 9:23 PM
Status
Modified
Published
Dec 14, 2022, 2:15 PM
Modified
Jun 17, 2026, 4:30 AM
Severity
Moderate
Public date
Dec 13, 2022, 12:00 AM