CVE-2018-20573

6.5 mediumEPSS 2.5%

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.

Severity

CVSS 3.0

6.5 medium

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 2.5% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
CWE: CWE-119
Published: 2018-12-28
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

yaml-cpp_project:yaml-cpp

References

https://github.com/jbeder/yaml-cpp/issues/655
http://seclists.org/fulldisclosure/2024/Nov/0
https://github.com/jbeder/yaml-cpp/issues/655

Check your stack JSON