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Findings

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.

Published May 10, 2026 · updated Sep 16, 2026 · libexpat project libexpat

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.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 10, 2026 · NIST NVD

    Detected

    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. Sep 16, 2026 · NIST NVD

    Updated

    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.

Affected

  • cpe libexpat project/libexpatversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-45186

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-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.

    nvd.nist.gov

References