{
"id": "GHSA-3pqx-4fqf-j49f",
"aliases": [
"CVE-2019-20477"
],
"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.",
"summary": "Deserialization of Untrusted Data in PyYAML",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.1"
},
{
"fixed": "5.2"
}
]
}
],
"package": {
"name": "pyyaml",
"ecosystem": "PyPI"
}
}
],
"modified": "2024-10-25T21:15:15Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"published": "2021-04-20T16:40:42Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20477",
"type": "ADVISORY"
},
{
"url": "https://github.com/advisories/GHSA-3pqx-4fqf-j49f",
"type": "ADVISORY"
},
{
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/pyyaml/PYSEC-2020-176.yaml",
"type": "WEB"
},
{
"url": "https://github.com/yaml/pyyaml",
"type": "PACKAGE"
},
{
"url": "https://github.com/yaml/pyyaml/blob/master/CHANGES",
"type": "WEB"
},
{
"url": "https://lists.fedoraproject.org/archives/list/[email protected] /message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN",
"type": "WEB"
},
{
"url": "https://lists.fedoraproject.org/archives/list/[email protected] /message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4H",
"type": "WEB"
},
{
"url": "https://www.exploit-db.com/download/47655",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": "2020-02-19T04:15:00Z",
"github_reviewed_at": "2021-04-08T19:24:04Z"
}
}