CVE-2022-23516: high-severity vulnerability in flavorjones loofah
Uncontrolled Recursion in Loofah
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 1.2%
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
flavorjones · loofahRelated CVEs — flavorjones loofah
In the same product, most dangerous first.
CVE-2022-23514HIGHInefficient Regular Expression Complexity in LoofahEPSS 1.8%CVE-2022-23515MEDIUMImproper neutralization of data URIs may allow XSS in LoofahEPSS 0.9%CVE-2026-73492LOWLoofah `allowed_uri?` does not detect `javascript:` URIs split by numeric character references without semicolonsEPSS 0.4%CVE-2026-73491LOWLoofah `allowed_uri?` does not detect `javascript:` URIs split by named whitespace character referencesEPSS 0.4%CVE-2026-73490MEDIUMLoofah: SVG `href` attribute bypasses local-reference restrictionEPSS 0.3%