What’s Vulnerable › Vulnerabilities

CVE-2020-2166

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-25 · updated 2026-06-17
• Weakness: CWE-20

Description

Jenkins Pipeline: AWS Steps Plugin 1.40 and earlier does not configure its YAML parser to prevent the instantiation of arbitrary types, resulting in a remote code execution vulnerability.

Affected products

• Jenkins project Jenkins Pipeline: AWS Steps Plugin: through 1.40

References

• http://www.openwall.com/lists/oss-security/2020/03/25/2
• https://jenkins.io/security/advisory/2020-03-25/#SECURITY-1741
• http://www.openwall.com/lists/oss-security/2020/03/25/2
• https://jenkins.io/security/advisory/2020-03-25/#SECURITY-1741

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