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VULNERABILITIES

CVE-2026-45186 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA: redhat-SADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:22715 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:22721 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:23230 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:26319 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:27201 redhat-SADP

see all 13 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-407Inefficient Algorithmic Complexityredhat-SADP
CWE-407Inefficient Algorithmic Complexity[email protected]

Affected Products

ProductVersions
libexpat project libexpat
< 2.8.1

CPE

  • cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

14 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-45186
NVD Published Date:
May 10, 2026
NVD Last Modified:
Sep 16, 2026
Source:
[email protected]
CVE-2026-45186 Details - Not Deferred