CVE-2022-23516

Advisory lineage Upstream: 0 Downstream: 10
Modified
Published: 14 Dec 2022, 13:26
Last modified:03 Nov 2025, 21:45

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
0.05% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

14 Dec 2022, 13:26
Published
Vulnerability first disclosed
03 Nov 2025, 21:45
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.05%• Percentile: 15%

Techniques & Countermeasures

  • CWE-674•Uncontrolled Recursion

    The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

Affected Systems

  • flavorjones•loofah

    ≥ 2.2.0, < 2.19.1

  • loofah_project•loofah

    ≥ 2.2.0, < 2.19.1

References (3)