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CVE-2022-29181 — Vulnerability in nokogiri — CVE Details

HIGH

Nokogiri Improperly Handles Unexpected Data Type

Published May 23, 2022Updated May 27, 2025Source: osv

Summary

### Summary Nokogiri `< v1.13.6` does not type-check all inputs into the XML and HTML4 SAX parsers. For CRuby users, this may allow specially crafted untrusted inputs to cause illegal memory access errors (segfault) or reads from unrelated memory. ### Severity The Nokogiri maintainers have evaluated this as **High 8.2** (CVSS3.1). ### Mitigation CRuby users should upgrade to Nokogiri `>= 1.13.6`. JRuby users are not affected. ### Workarounds To avoid this vulnerability in affected applications, ensure the untrusted input is a `String` by calling `#to_s` or equivalent. ### Credit This vulnerability was responsibly reported by @agustingianni and the Github Security Lab.

Advisory Timeline

  • First published May 23, 2022 (1602 days ago).
  • Last revised May 27, 2025 — 1100 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler
Update nokogiri to 1.13.6 or later
gem install nokogiri -v 1.13.6

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

PackageEcosystemAffectedFixed In
nokogiri
rubygems
1.0.0, 1.0.1, 1.0.2, 1.0.3 (+141 more)1.13.6

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.2 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

References

Frequently Asked Questions

What is CVE-2022-29181?
Nokogiri Improperly Handles Unexpected Data Type This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.2/10).
How do I check if my project is affected by CVE-2022-29181?
CVE-2022-29181 affects nokogiri. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2022-29181 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.2

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-xh29-r2w5-wx8m

Related CVEs

  • CVE-2016-4658
    CRITICAL

    Nokogiri does not forbid namespace nodes in XPointer ranges

  • CVE-2018-25032
    HIGH

    Nokogiri affected by zlib's Out-of-bounds Write vulnerability

  • CVE-2021-3517
    HIGH

    Nokogiri contains libxml Out-of-bounds Write vulnerability

  • CVE-2025-71406
    HIGH

    Nokogiri updates packaged libxslt to v1.1.43 to resolve multiple CVEs

  • CVE-2017-5029
    HIGH

    Nokogiri implementation of libxslt lacks integer overflow checks

  • CVE-2013-6461
    MEDIUM

    Nokogiri vulnerable to DoS while parsing XML entities

  • CVE-2026-57437
    LOW

    Nokogiri: Possible Use-After-Free when directly using `NokogirI::XML::XPathContext` beyond document lifetime

  • CVE-2026-57435
    LOW

    Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=`

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