CVE-2026-45186

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-45186
In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.

2.9 /10

CVSS v3 : LOW

V3 Legend

Vector :

Exploitability : 1.4 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References
Link Resource
https://github.com/libexpat/libexpat/pull/1216 Exploit Issue Tracking Patch
http://www.openwall.com/lists/oss-security/2026/05/11/16 Mailing List Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
History

14 May 2026, 17:20

Type Values Removed Values Added
CPE cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
References () https://github.com/libexpat/libexpat/pull/1216 - () https://github.com/libexpat/libexpat/pull/1216 - Exploit, Issue Tracking, Patch
References () http://www.openwall.com/lists/oss-security/2026/05/11/16 - () http://www.openwall.com/lists/oss-security/2026/05/11/16 - Mailing List, Third Party Advisory
First Time Libexpat Project
Libexpat Project libexpat

11 May 2026, 23:20

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2026/05/11/16 -

10 May 2026, 07:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-10 07:16

Updated : 2026-05-14 17:20

NVD link : CVE-2026-45186

Mitre link : CVE-2026-45186

CVE.ORG link : CVE-2026-45186

JSON object : View

Products Affected

libexpat_project

  • libexpat
CWE
CWE-407

Inefficient Algorithmic Complexity