What is CVE-2019-6292?

CVE-2019-6292 is a medium-severity vulnerability in Yaml-Cpp Project, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2019-01-15.

How severe is CVE-2019-6292?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2019-6292 known to be exploited?

8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Yaml-Cpp Project

CVE-2019-6292

An issue was discovered in singledocparser.cpp in yaml-cpp (aka LibYaml-C++) 0.6.2. Stack Exhaustion occurs in YAML::SingleDocParser, and there is a stack consumption problem caused by recursive stack frames: HandleCompactMap, HandleMap, HandleFlowSequence, HandleSequence, HandleNode. Remote attackers could leverage this vulnerability to cause a denial-of-service via a cpp file.

Published 2019-01-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.019 (78.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.019 · change: +0.001

Affected products

Yaml-Cpp Project — versions 0.6.2

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

Public proof-of-concept exploits

References

github.com/jbeder/yaml-cpp/issues/657 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-6292?: CVE-2019-6292 is a medium-severity vulnerability in Yaml-Cpp Project, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2019-01-15.
How severe is CVE-2019-6292?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2019-6292 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.