CVE-2022-23516

Uncontrolled Recursion in Loofah

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.03%
Third-Party Advisory github.com
Affected: flavorjones loofah
Published at:
Updated at:

References

Link Tags
https://github.com/flavorjones/loofah/security/advisories/GHSA-3x8r-x6xp-q4vm third party advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00011.html

Frequently Asked Questions

What is the severity of CVE-2022-23516?
CVE-2022-23516 has been scored as a high severity vulnerability.
How to fix CVE-2022-23516?
To fix CVE-2022-23516, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-23516 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-23516 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-23516?
CVE-2022-23516 affects flavorjones loofah.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.