CVE-2019-20477

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2019-20477
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-20477.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2019-20477
Aliases
Downstream
Related
Published
2020-02-19T04:15:10.803Z
Modified
2026-05-28T04:04:43.758664615Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342.

Database specific 
{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "last_affected": "30"
                },
                {
                    "last_affected": "31"
                }
            ],
            "source": "CPE_STRING",
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora"
        }
    ]
}
References

Affected packages

Git / github.com/yaml/pyyaml

Affected ranges

Type
GIT
Repo
https://github.com/yaml/pyyaml
Events
Introduced
e471e86bf6dabdad45a1438c20a4a5c033eb9034
Last affected
a9b98a3daa43d43afd8051b014d5b4154d141913
Database specific 
{
    "cpe": "cpe:2.3:a:pyyaml:pyyaml:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "5.1"
        },
        {
            "last_affected": "5.1.2"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-20477.json"