What’s Vulnerable › Vulnerabilities

CVE-2019-20478

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-02-19 · updated 2026-06-17

Description

In ruamel.yaml through 0.16.7, the load method allows remote code execution if the application calls this method with an untrusted argument. In other words, this issue affects developers who are unaware of the need to use methods such as safe_load in these use cases.

Affected products

• Ruamel.Yaml Project Ruamel.Yaml: through 0.16.7

References

• https://www.exploit-db.com/exploits/47655
• https://www.exploit-db.com/exploits/47655

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