Description
This CVE ID has been rejected as a duplicate.
Published: 2026-08-25
Score: 8.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

This CVE ID has been rejected as a duplicate.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade Nokogiri to version 1.18.3 or later.
  • If an upgrade is not immediately possible, disable DTD processing and schema validation for any XML that originates from an untrusted source to prevent the trigger of the vulnerability.
  • For critical applications, implement input sanitization to reject or limit excessively long QName prefixes prior to passing data to Nokogiri.

Generated by OpenCVE AI on August 25, 2026 at 16:20 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Fri, 04 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Title rubygem-nokogiri: Nokogiri before 1.18.3 Stack Buffer Overflow and Use-After-Free
Weaknesses CWE-121
References
Metrics threat_severity

None

 cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}

threat_severity

Important

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

Type Values Removed Values Added
Description Nokogiri before 1.18.3 contains a stack buffer overflow vulnerability in libxml2 when reporting DTD validation errors with long QName prefixes, and a use-after-free vulnerability during validation against untrusted XML Schemas. Attackers can trigger these vulnerabilities by providing malicious DTD content or untrusted XSD files to cause denial of service or potential code execution. This CVE ID has been rejected as a duplicate.
Title Nokogiri before 1.18.3 Stack Buffer Overflow and Use-After-Free
Weaknesses CWE-787
CPEs cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:*
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

ssvc

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

Tue, 25 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

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

Type Values Removed Values Added
Description Nokogiri before 1.18.3 contains a stack buffer overflow vulnerability in libxml2 when reporting DTD validation errors with long QName prefixes, and a use-after-free vulnerability during validation against untrusted XML Schemas. Attackers can trigger these vulnerabilities by providing malicious DTD content or untrusted XSD files to cause denial of service or potential code execution.
Title Nokogiri before 1.18.3 Stack Buffer Overflow and Use-After-Free
First Time appeared Nokogiri
Nokogiri nokogiri
Weaknesses CWE-787
CPEs cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:*
Vendors & Products Nokogiri
Nokogiri nokogiri
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Nokogiri Nokogiri
cve-icon MITRE

Status: REJECTED

Assigner: VulnCheck

Published:

Updated: 2026-09-01T20:33:25.113Z

Reserved: 2026-07-18T12:38:41.077Z

Link: CVE-2025-71407

cve-icon Vulnrichment

Updated:

cve-icon NVD

Status : Rejected

Published: 2026-08-25T16:16:45.633

Modified: 2026-09-01T21:18:20.930

Link: CVE-2025-71407

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-25T15:15:59Z

Links: CVE-2025-71407 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-25T18:15:03Z

Weaknesses
  • CWE-121

    Stack-based Buffer Overflow