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Vulnerability record · CVE-2022-29181 · published 20 May 2022

CVE-2022-29181: Nokogiri type confusion vulnerability

Nokogiri · Nokogiri

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.

8.2 CVSS 3.1 High EPSS 3.2% · top 12.2% CWE-241 · CWE-241CWE-843 · Type confusion
8.2CVSS 3.1 base score, v2 6.4
3.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/sparklemotion/nokogiri/commit/83cc451c3f29df397caa890afc3b714eae6ab8f7
https://github.com/sparklemotion/nokogiri/commit/db05ba9a1bd4b90aa6c76742cf6102a7c7297267 PatchThird Party Advisory
https://github.com/sparklemotion/nokogiri/releases/tag/v1.13.6 Release NotesThird Party Advisory
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-xh29-r2w5-wx8m Issue TrackingThird Party Advisory
https://securitylab.github.com/advisories/GHSL-2022-031_GHSL-2022-032_Nokogiri
http://seclists.org/fulldisclosure/2022/Dec/23 Mailing ListThird Party Advisory
https://github.com/sparklemotion/nokogiri/commit/db05ba9a1bd4b90aa6c76742cf6102a7c7297267 PatchThird Party Advisory
https://github.com/sparklemotion/nokogiri/releases/tag/v1.13.6 Release NotesThird Party Advisory
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-xh29-r2w5-wx8m Issue TrackingThird Party Advisory
https://security.gentoo.org/glsa/202208-29 Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2022-031_GHSL-2022-032_Nokogiri/ ExploitThird Party Advisory
https://support.apple.com/kb/HT213532 Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-29181), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.