In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.
Advisories
Source ID Title
Ubuntu USN Ubuntu USN USN-8910-1 libxml2 vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 14 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 08 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Title Heap-Based Buffer Overflow in libxml2 via XPointer Evaluation libxml2: libxml2: Heap-based buffer overflow in xmlXPtrEval due to xpointer length saturation
Weaknesses CWE-805
References
Metrics threat_severity

None

threat_severity

Moderate


Sat, 05 Sep 2026 06:45:00 +0000

Type Values Removed Values Added
Title Heap-Based Buffer Overflow in libxml2 via XPointer Evaluation

Sat, 05 Sep 2026 04:45:00 +0000

Type Values Removed Values Added
Description In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.
First Time appeared Xmlsoft
Xmlsoft libxml2
Weaknesses CWE-122
CPEs cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
Vendors & Products Xmlsoft
Xmlsoft libxml2
References
Metrics cvssV3_1

{'score': 6.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-14T13:50:49.902Z

Reserved: 2026-09-05T04:29:32.967Z

Link: CVE-2026-86142

cve-icon Vulnrichment

Updated: 2026-09-14T13:48:07.113Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-05T05:17:13.133

Modified: 2026-09-15T19:35:48.663

Link: CVE-2026-86142

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-05T04:29:33Z

Links: CVE-2026-86142 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-08T02:15:08Z

Weaknesses