xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations.
History

Sun, 21 Jun 2026 17:45:00 +0000

Type Values Removed Values Added
Title Integer Overflow in XML Notation Declaration Parsing

Sun, 21 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
Description xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations.
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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-06-21T15:56:42.729Z

Updated: 2026-06-21T15:56:42.729Z

Reserved: 2026-06-21T15:56:42.365Z

Link: CVE-2026-56411

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.