CVE-2018-20573: Yaml-Cpp Project Yaml-Cpp

Medium severity, CVSS 6.5. EPSS: 2.5% chance of exploitation in the next 30 days.

The Scanner::EnsureTokensInQueue function in yaml-cpp (aka LibYaml-C++) 0.6.2 allows remote attackers to cause a denial of service (stack consumption and application crash) via a crafted YAML file.

Affected products

• Yaml-Cpp Project Yaml-Cpp: version 0.6.2 only

Published 2018-12-28. Last modified 2026-06-17.