libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse.

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History

Wed, 24 Jun 2026 12:15:00 +0000

Type Values Removed Values Added
Title Integer Overflow in XML_ParseBuffer Causing Memory Corruption libexpat: libexpat: Arbitrary code execution via integer overflow in XML_ParseBuffer
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 22 Jun 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Sun, 21 Jun 2026 18:45:00 +0000

Type Values Removed Values Added
Title Integer Overflow in XML_ParseBuffer Causing Memory Corruption

Sun, 21 Jun 2026 16:00:00 +0000

Type Values Removed Values Added
Description libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse.
First Time appeared Libexpat Project
Libexpat Project libexpat
Weaknesses CWE-190
CPEs cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
Vendors & Products Libexpat Project
Libexpat Project libexpat
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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-22T17:02:44.194Z

Reserved: 2026-06-21T15:48:21.578Z

Link: CVE-2026-56406

cve-icon Vulnrichment

Updated: 2026-06-22T17:02:40.816Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-06-21T15:48:21Z

Links: CVE-2026-56406 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-21T19:45:16Z

Weaknesses