Description
In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.
Published: 2026-09-05
Score: 6.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sat, 05 Sep 2026 04:30:00 +0000

Type Values Removed Values Added
Description In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.
First Time appeared Xmlsoft
Xmlsoft libxml2
Weaknesses CWE-190
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'}

Subscriptions

Xmlsoft Libxml2
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-05T04:21:53.127Z

Reserved: 2026-09-05T04:21:52.780Z

Link: CVE-2026-86138

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-05T05:17:12.600

Modified: 2026-09-05T05:17:12.600

Link: CVE-2026-86138

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-190

    Integer Overflow or Wraparound