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OpenAdvisories
High · 7.5 CVE-2022-23516 EUVD-2022-7493GHSA-3x8r-x6xp-q4vm

Uncontrolled Recursion in Loofah

Published Dec 14, 2022 · Updated Nov 3, 2025 · Assigned by GitHub_M

Vendor: flavorjones Product: loofah Package: loofah Package: ruby-loofah Package: ruby-loofah Ecosystem: Debian Ecosystem: RubyGems Ecosystem: Ubuntu

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.

Affected products

VendorProductAffectedFixed
flavorjones loofah >= 2.2.0, < 2.19.1 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 ruby-loofah 2.19.1-1 —
Debian 13 ruby-loofah 2.19.1-1 —
Debian 12 ruby-loofah 2.19.1-1 —
Debian 11 ruby-loofah 2.7.0+dfsg-1+deb11u1 DLA-3901-1
Debian 10 ruby-loofah 2.2.3-1+deb10u2 DLA-3565-1

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 22.04 LTS ruby-loofah No fix yet —
Ubuntu 20.04 LTS ruby-loofah No fix yet —
Ubuntu 18.04 LTS ruby-loofah No fix yet —
Ubuntu 16.04 LTS ruby-loofah No fix yet —

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
Red Hat Satellite Capsule 6 ansible-collection-redhat-satellite 3.9.0-2.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 ansible-collection-redhat-satellite_operations 1.3.0-2.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 ansible-lint 5.0.8-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 ansible-runner +1 2.2.1-3.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 ansiblerole-foreman_scap_client 0.2.0-2.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 ansiblerole-insights-client 1.7.1-2.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 cjson 1.7.14-5.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 createrepo_c +3 0.20.1-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 dynflow-utils 1.6.3-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 foreman +1 3.5.1.14-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 foreman-bootloaders-redhat +1 202102220000-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 foreman-discovery-image 1:4.1.0-10.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 foreman-discovery-image-service +1 1.0.0-4.1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 foreman-installer +1 1:3.5.2.1-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 foreman-proxy +1 3.5.1-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 katello +3 4.7.0-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 katello-certs-tools 2.9.0-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 katello-client-bootstrap 1.7.9-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 libcomps +2 0.1.18-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 libdb-cxx 5.3.28-42.el8_4 RHSA-2023:2097
Red Hat Satellite Capsule 6 libsodium 1.0.17-3.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 libsolv +2 0.7.22-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 libwebsockets 2.4.2-2.el8 RHSA-2023:2097
Red Hat Satellite Capsule 6 mosquitto 2.0.14-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 pulpcore-selinux 1.3.2-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 puppet-agent 7.12.1-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 puppet-agent-oauth 0.5.10-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 puppet-foreman_scap_client 0.4.0-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 puppetlabs-stdlib 5.2.0-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 puppetserver 7.9.3-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 python-aiodns +1 3.0.0-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-aiofiles +1 22.1.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-aiohttp +1 3.8.1-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-aiohttp-xmlrpc +1 1.5.0-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-aioredis +1 2.0.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-aiosignal +1 1.2.0-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-ansible-builder +1 1.0.1-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-asgiref +1 3.5.2-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-async-lru +1 1.0.3-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-async-timeout +1 4.0.2-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-asyncio-throttle +1 1.0.2-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-attrs +1 21.4.0-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-backoff +1 2.1.2-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-bindep +1 2.11.0-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-bleach +1 3.3.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-bleach-allowlist +1 1.0.3-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-bracex +1 2.2.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-brotli +1 1.0.9-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-cchardet +1 2.1.7-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-certifi +1 2020.6.20-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-cffi +1 1.15.1-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-chardet +1 5.0.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-charset-normalizer +1 2.1.1-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-click +1 8.1.3-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-click-shell +1 2.1-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-colorama +1 0.4.4-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-commonmark +1 0.9.1-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-contextlib2 +1 21.6.0-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-cryptography +1 3.4.8-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-daemon +1 2.3.1-1.1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 python-dataclasses +1 0.8-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-dateutil +1 2.8.2-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-debian +1 0.1.43-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-defusedxml +1 0.7.1-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-deprecated +1 1.2.13-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-diff-match-patch +1 20200713-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-distro +1 1.7.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-django +1 3.2.18-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-django-currentuser +1 0.5.3-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-django-filter +1 22.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-django-guid +1 3.3.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-django-import-export +1 2.8.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-django-lifecycle +1 1.0.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-djangorestframework +1 3.13.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-djangorestframework-queryfields +1 1.0.0-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-docutils +1 0.19-1.1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 python-drf-access-policy +1 1.1.2-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-drf-nested-routers +1 0.93.4-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-drf-spectacular +1 0.23.1-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-dynaconf +1 3.1.9-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-ecdsa +1 0.14.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-enrich +1 1.2.6-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-et-xmlfile +1 1.1.0-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-flake8 +1 3.9.2-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-frozenlist +1 1.3.0-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-future +1 0.18.2-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-galaxy-importer +1 0.4.5-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-gitdb +1 4.0.9-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-gitpython +1 3.1.26-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-gnupg +1 0.5.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-gunicorn +1 20.1.0-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-idna +1 3.3-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-idna-ssl +1 1.1.0-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-importlib-metadata +1 4.10.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-inflection +3 0.5.1-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-iniparse +1 0.4-35.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-jinja2 +1 3.1.2-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-jsonschema +1 4.9.1-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-lockfile +1 0.12.2-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 python-lxml +1 4.7.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-markdown +1 3.3.6-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-markuppy +1 1.14-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-markupsafe +1 2.0.1-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-mccabe +1 0.6.1-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-multidict +1 6.0.2-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-naya +3 1.1.1-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-odfpy +1 1.4.1-6.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-openpyxl +1 3.0.9-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-packaging +1 21.3-1.1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 python-parsley +1 1.3-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pbr +1 5.8.0-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pexpect +1 4.8.0-2.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 python-productmd +1 1.33-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-protobuf +1 4.21.6-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-psycopg2 +1 2.9.3-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-ptyprocess +1 0.7.0-1.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pulp-ansible +1 1:0.15.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pulp-certguard +1 1.5.5-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pulp-cli +1 0.14.0-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pulp-container +1 2.14.3-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pulp-deb +1 2.20.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pulp-file +1 1.11.1-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pulp-rpm +1 3.18.11-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pulpcore +1 3.21.6-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pyOpenSSL +1 19.1.0-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pycairo +1 1.20.1-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pycares +1 4.1.2-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pycodestyle +1 2.7.0-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pycparser +1 2.21-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pycryptodomex +1 3.14.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pyflakes +1 2.3.1-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pygments +1 2.11.2-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pygobject +1 1:3.40.1-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pygtrie +1 2.5.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pyjwkest +1 1.4.2-6.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pyjwt +1 2.5.0-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pyparsing +1 2.4.7-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pyrsistent +1 0.18.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pytz +1 2022.2.1-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-pyyaml +1 5.4.1-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-qpid +1 1.37.0-1.el8 RHSA-2023:2097
Red Hat Satellite Capsule 6 python-redis +1 4.3.4-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-requests +1 2.28.1-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-requirements-parser +1 0.2.0-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-rhsm +1 1.19.2-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-rich +1 10.12.0-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-ruamel-yaml +1 0.17.20-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-ruamel-yaml-clib +1 0.2.6-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-schema +1 0.7.5-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-semantic-version +1 2.10.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-six +1 1.16.0-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-smmap +1 5.0.0-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-sqlparse +1 0.4.2-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-tablib +1 3.2.0-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-tenacity +1 7.0.0-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-toml +1 0.10.2-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-types-cryptography +1 3.3.23-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-typing-extensions +1 3.10.0.2-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-uritemplate +1 4.1.1-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-url-normalize +1 1.4.3-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-urllib3 +1 1.26.8-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-urlman +1 2.0.1-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-wcmatch +1 8.3-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-whitenoise +1 6.0.0-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-wrapt +1 1.14.1-1.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-xlrd +1 2.0.1-5.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-xlwt +1 1.3.0-3.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-yarl 1.7.2-2.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python-zipp 3.4.0-4.el8pc RHSA-2023:2097
Red Hat Satellite Capsule 6 python2-qpid-qmf 1.39.0-7.el8amq RHSA-2023:2097
Red Hat Satellite Capsule 6 python2-saslwrapper 0.22-6.el8sat RHSA-2023:2097
Red Hat Satellite Capsule 6 python3-qpid-proton 0.33.0-4.el8 RHSA-2023:2097

SUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
SLES 15 SP4 rubygem-loofah 2.2.2-150000.4.9.1 SUSE-SU-2023:1657-1
SLES 15 SP3 rubygem-loofah 2.2.2-150000.4.9.1 SUSE-SU-2023:1657-1
SLES 15 SP2 rubygem-loofah 2.2.2-150000.4.9.1 SUSE-SU-2023:1657-1
SLES 15 SP1 rubygem-loofah 2.2.2-150000.4.9.1 SUSE-SU-2023:1657-1

openSUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed rubygem-loofah 2.19.1-1.1 openSUSE-SU-2026:10353-1, openSUSE-SU-2025:15120-1, openSUSE-SU-2024:14171-1
openSUSE Leap 15.4 rubygem-loofah 2.2.2-150000.4.9.1 SUSE-SU-2023:1657-1

Affected packages

EcosystemPackageAffectedFixedRecord
RubyGems loofah >= 2.2.0, < 2.19.1 2.19.1 GHSA-3x8r-x6xp-q4vm

Advisories 9

References