CVE-2022-29181

Improper Handling of Unexpected Data Type in 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.

Affected

sparklemotion · nokogiri

CVSS v3.1 NVD

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

CVSS v2.0 NVD

6.4 MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:P

EPSS

3.23% chance of exploitation in the next 30 days, 88th percentile

Published

2022-05-20

Updated

2025-05-27

Proof-of-concept exploits (1)

• https://securitylab.github.com/advisories/GHSL-2022-031_GHSL-2022-032_Nokogiri

Security advisories

• http://seclists.org/fulldisclosure/2022/Dec/23
• sparklemotion/nokogiri/releases/tag/v1.13.6
• sparklemotion/nokogiri/security/advisories/GHSA-xh29-r2w5-wx8m
• https://security.gentoo.org/glsa/202208-29
• https://support.apple.com/kb/HT213532
• advisories/GHSA-xh29-r2w5-wx8m

References

• CVE Record
• NVD entry