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EUVD-2026-258332

fkie_cve-2022-23516

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.

GHSA-3x8r-x6xp-q4vm — Uncontrolled Recursion in Loofah

Affected: RubyGems: loofah

## Summary

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.

## Mitigation

Upgrade to Loofah `>= 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.

## 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-674: Uncontrolled Recursion (4.9)](https://cwe.mitre.org/data/definitions/674.html)

gsd-2022-23516

openSUSE-SU-2024:12768-1 — ruby3.1-rubygem-loofah-2.19.1-1.1 on GA media

ruby3.1-rubygem-loofah-2.19.1-1.1 on GA media

RHSA-2023:2097 — Red Hat Security Advisory: Satellite 6.13 Release

jackson-databind: Possible DoS if using JDK serialization to serialize JsonNode SnakeYaml: Constructor Deserialization Remote Code Execution rubygem-actionpack: Possible cross-site scripting vulnerability in Action Pack rubygem-loofah: inefficient regular expression leading to denial of service rubygem-loofah: Improper neutralization of data URIs leading to Cross Site Scripting rubygem-loofah: Uncontrolled Recursion leading to denial of service rubygem-rails-html-sanitizer: Inefficient Regular Expression leading to denial of service rubygem-rails-html-sanitizer: Improper neutralization of data URIs leading to Cross site scripting rubygem-rails-html-sanitizer: Cross site scripting vulnerability with certain configurations rubygem-rails-html-sanitizer: Cross site scripting vulnerability with certain configurations snakeyaml: Denial of Service due to missing nested depth limitation for collections tfm-rubygem-actionview: Possible cross-site scripting vulnerability in Action View tag helpers rubygem-tzinfo: arbitrary code execution activerecord: Possible RCE escalation bug with Serialized Columns in Active Record apache-commons-configuration: Apache Commons Configuration insecure interpolation defaults snakeyaml: Uncaught exception in org.yaml.snakeyaml.composer.Composer.composeSequenceNode snakeyaml: Uncaught exception in org.yaml.snakeyaml.constructor.BaseConstructor.constructObject snakeyaml: Uncaught exception in java.base/java.util.regex.Pattern$Ques.match snakeyaml: Uncaug…

SUSE-SU-2023:1657-1 — Security update for rubygem-loofah

Security update for rubygem-loofah

UBUNTU-CVE-2022-23516

Affected: Ubuntu:16.04:LTS: ruby-loofah, Ubuntu:18.04:LTS: ruby-loofah, Ubuntu:20.04:LTS: ruby-loofah, Ubuntu:22.04:LTS: ruby-loofah

WID-SEC-W-2023-1143 — Red Hat Satellite: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Satellite ausnutzen, um beliebigen Programmcode auszuführen, Informationen offenzulegen, einen Cross-Site-Scripting-Angriff durchzuführen oder einen Denial of Service Zustand herbeizuführen.