Home/CVE/Nokogiri is an open source XML and HTML library for Ruby. Nokogiri prior to version 1.13.6 does not type-check all input
CVE

CVE-2022-29181

Nokogiri is an open source XML and HTML library for Ruby. Nokogiri prior to version 1.13.6 does not type-check all input

Nokogiri is an open source XML and HTML library for Ruby. Nokogiri prior to version 1.13.6 does not type-check all inputs into the XML and HTML4 SAX parsers, allowing specially crafted untrusted inputs to cause illegal memory access errors (segfault) or reads from unrelated memory. Version 1.13.6 contains a patch for this issue.

As a workaround, ensure the untrusted input is a String by calling #to_s or equivalent.

HIGH · CVSS 8.2 EPSS 0.04183
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-241Improper Handling of Unexpected Data Type
CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
▤

Affected Products & Versions

2
nokogiri< 1.13.6
apple macos>= 13.0 and < 13.1
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems nokogiri HIGH fixed in 1.13.6
⚠

Public Exploits & PoCs

1
pocsecuritylab.github.com · GHSL-2022-031_GHSL-2022-032_Nokogirisecuritylab.github.com
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Microsoft Office Child Process - MacOS
producthighRemote Access Tool - Renamed MeshAgent Execution - MacOS
producthighBinary Padding - MacOS
productmediumSuspicious Execution via macOS Script Editor
productmediumSystem Information Discovery Via Sysctl - MacOS
productmediumNew File Exclusion Added To Time Machine Via Tmutil - MacOS
▣

Scoring & Timeline

8.2
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD20 May 2022 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

10
suse-csafopenSUSE-SU-2026:10356-1
usnUSN-7659-1
suse-csafopenSUSE-SU-2025:14697-1
rhsaRHSA-2022:8506Important
suse-csafopenSUSE-SU-2024:14174-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/sparklemotion/nokogiri/commit/83cc451c3f29df397caa890afc3b714eae6ab8f7
https://github.com/sparklemotion/nokogiri/commit/db05ba9a1bd4b90aa6c76742cf6102a7c7297267PatchThird Party Advisory
https://github.com/sparklemotion/nokogiri/releases/tag/v1.13.6Release NotesThird Party Advisory
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-xh29-r2w5-wx8mIssue TrackingThird Party Advisory
https://securitylab.github.com/advisories/GHSL-2022-031_GHSL-2022-032_Nokogiri
http://seclists.org/fulldisclosure/2022/Dec/23Mailing ListThird Party Advisory
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