CVE-2026-45186

HIGH EPSS 22.8%
Published May 10, 20261mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published May 10, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
22.8% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-407

Affected Products 1

VendorProductVersionRange
libexpat_projectlibexpat* <2.8.1

References 2

  • openwall.com http://www.openwall.com/lists/oss-security/2026/05/11/16
    Mailing ListThird Party Advisory
  • github.com https://github.com/libexpat/libexpat/pull/1216
    ExploitIssue TrackingPatch

Remediation

  • github.com https://github.com/libexpat/libexpat/pull/1216
    ExploitIssue TrackingPatch