CVE-2023-54354
Nokogiri before 1.14.3 Null Pointer Dereference via libxml2
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
Nokogiri before 1.14.3 (CRuby implementation only, when using the packaged libxml2) bundles libxml2 v2.10.3, which is vulnerable to NULL pointer dereferences in XML Schema processing (xmlSchemaFixupComplexType, CVE-2023-28484, and xmlSchemaCheckCOSSTDerivedOK). An attacker who supplies a crafted/malformed XML schema can cause libxml2 to dereference a NULL pointer and potentially segfault, resulting in a denial of service. Nokogiri 1.14.3 upgrades the packaged libxml2 to v2.10.4 to resolve these issues.
| CWE | CWE-476 |
| Vendor | sparklemotion |
| Product | nokogiri |
| Published | Aug 25, 2026 |
| Last Updated | 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 < 1.14.3
References
github.com: https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-pxvg-2qj5-37jq github.com: https://github.com/sparklemotion/nokogiri/commit/09a2dd453007f9c7205274623acdd73747c22d64 github.com: https://github.com/sparklemotion/nokogiri/commit/647e072ea0a2f12687fa05c172f4c4713fdb0c4f github.com: https://github.com/sparklemotion/nokogiri/commit/4c6922f763ad958c48ff66f82823ae21f2e92ee6 vulncheck.com: https://www.vulncheck.com/advisories/nokogiri-before-null-pointer-dereference-via-libxml2