CVE-2026-45186 | THREATINT

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.

PUBLISHED Reserved 2026-05-10 | Published 2026-05-10 | Updated 2026-05-10 | Assigner mitre

LOW: 2.9CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Problem types

CWE-407 Inefficient Algorithmic Complexity

Product status

Default status

unaffected

Any version before 2.8.1

affected

References

github.com/libexpat/libexpat/pull/1216

cve.org (CVE-2026-45186)

nvd.nist.gov (CVE-2026-45186)

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