CVE-2025-71346

nokogiri: libxml2: Nokogiri: Heap buffer under-read in XML Schema validation

Published Aug 25, 2026 CVSS 3.1 · 2.9 Low EPSS n/a KEV · Not listed
Description
This CVE ID has been rejected as a duplicate.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description Nokogiri before 1.18.8 packages a vulnerable version of libxml2 (before 2.13.8) that contains a heap-based buffer under-read (CVE-2025-32415) in the xmlSchemaIDCFillNodeTables function in xmlschemas.c. The issue can be triggered when validating against an untrusted XML Schema, or when validating untrusted documents against trusted schemas that use xsd:keyref in combination with recursively defined types that have additional identity constraints. Upstream and MITRE rate this issue as low severity. This CVE ID has been rejected as a duplicate.
Title Nokogiri before 1.18.8 Heap Buffer Under-read via XML Schema nokogiri: libxml2: Nokogiri: Heap buffer under-read in XML Schema validation
CPEs cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:*
Vendors & Products Nokogiri
Nokogiri nokogiri
Metrics 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'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Sparklemotion
Sparklemotion nokogiri
Vendors & Products Sparklemotion
Sparklemotion nokogiri
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Nokogiri before 1.18.8 packages a vulnerable version of libxml2 (before 2.13.8) that contains a heap-based buffer under-read (CVE-2025-32415) in the xmlSchemaIDCFillNodeTables function in xmlschemas.c. The issue can be triggered when validating against an untrusted XML Schema, or when validating untrusted documents against trusted schemas that use xsd:keyref in combination with recursively defined types that have additional identity constraints. Upstream and MITRE rate this issue as low severity.
Title Nokogiri before 1.18.8 Heap Buffer Under-read via XML Schema
First Time appeared Nokogiri
Nokogiri nokogiri
Weaknesses CWE-125
CPEs cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:*
Vendors & Products Nokogiri
Nokogiri nokogiri
References
Metrics cvssV3_1

{'score': 2.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}

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'}

Weaknesses

Sources

Status
REJECTED
Assigner
VulnCheck
Published
Updated
Sep 1, 2026, 8:33 PM
Reserved
Jun 20, 2026, 12:48 PM
Status
Rejected
Published
Aug 25, 2026, 4:16 PM
Modified
Oct 19, 2026, 7:10 PM
Severity
Low
Public date
Aug 25, 2026, 3:15 PM