CVE-2026-86142

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-86142
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-05 05:17:13 UTC
Updated2026-09-05 05:17:13 UTC
DescriptionIn libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.

Risk And Classification

Primary CVSS: v3.1 6.9 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Problem Types: CWE-122 | CWE-122 CWE-122 Heap-based Buffer Overflow

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.9MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
3.1CNACVSS6.9MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Xmlsoft Libxml2 affected 2.15.4 semver Not specified

References

ReferenceSourceLinkTags
github.com/GNOME/libxml2/commit/6b3a736c0edc74ceec3d82f5252499d7911b3a58 [email protected] github.com
gitlab.gnome.org/GNOME/libxml2/-/work_items/1113 [email protected] gitlab.gnome.org
github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4 [email protected] github.com
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