CVE-2022-50998

HIGH 7.5

Nokogiri before 1.13.9 Multiple Vulnerabilities via libxml2

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

Nokogiri before 1.13.9 (CRuby implementation using packaged libraries) bundles libxml2 v2.9.14, which is affected by CVE-2022-40304 (data corruption / double-free from an entity reference cycle when entity content is allocated from a dict) and CVE-2022-40303 (integer overflows when parsing with XML_PARSE_HUGE). Nokogiri 1.13.9 upgrades the packaged libxml2 to v2.10.3 to address these issues. Processing crafted XML input may lead to denial of service or memory corruption. (The advisory also references CVE-2022-2309, a NULL pointer dereference via iterwalk/canonicalize, which maintainers determined does not affect Nokogiri users.)

CWE	CWE-476
Vendor	sparklemotion
Product	nokogiri
Published	Aug 25, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

sparklemotion / nokogiri

0 < 1.13.9

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2qc6-mcvw-92cw github.com: https://github.com/sparklemotion/nokogiri/commit/644a89e080bced793295f61f18aac8cfad6bece2 github.com: https://github.com/sparklemotion/nokogiri/commit/c846986356fc149915a74972bf198abc266bc2c0 vulncheck.com: https://www.vulncheck.com/advisories/nokogiri-before-multiple-vulnerabilities-via-libxml2-2