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.
History

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:*

Fri, 28 Aug 2026 15:30:00 +0000


Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Tue, 25 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 25 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Nokogiri before 1.14.3 Null Pointer Dereference via libxml2
First Time appeared Nokogiri
Nokogiri nokogiri
Weaknesses CWE-476
CPEs cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:*
Vendors & Products Nokogiri
Nokogiri nokogiri
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-08-25T15:15:55.858Z

Updated: 2026-08-28T15:18:24.047Z

Reserved: 2026-01-10T01:51:52.987Z

Link: CVE-2023-54354

cve-icon Vulnrichment

Updated: 2026-08-25T16:12:03.131Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-25T16:16:44.543

Modified: 2026-09-01T19:40:15.450

Link: CVE-2023-54354

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-25T15:15:55Z

Links: CVE-2023-54354 - Bugzilla