Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/6034?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/6034?format=api", "vulnerability_id": "VCID-tk2n-xsk7-aqb9", "summary": "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.", "aliases": [ { "alias": "CVE-2019-20477" }, { "alias": "GHSA-3pqx-4fqf-j49f" }, { "alias": "PYSEC-2020-176" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/937019?format=api", "purl": "pkg:deb/debian/pyyaml@5.2-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@5.2-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/937015?format=api", "purl": "pkg:deb/debian/pyyaml@5.3.1-5?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@5.3.1-5%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/1052942?format=api", "purl": "pkg:deb/debian/pyyaml@5.3.1-5", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@5.3.1-5" }, { "url": "http://public2.vulnerablecode.io/api/packages/937013?format=api", "purl": "pkg:deb/debian/pyyaml@6.0-3?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@6.0-3%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/937017?format=api", "purl": "pkg:deb/debian/pyyaml@6.0.2-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@6.0.2-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/937016?format=api", "purl": "pkg:deb/debian/pyyaml@6.0.3-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@6.0.3-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/10034?format=api", "purl": "pkg:pypi/pyyaml@5.2b1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/pyyaml@5.2b1" }, { "url": "http://public2.vulnerablecode.io/api/packages/10368?format=api", "purl": "pkg:pypi/pyyaml@5.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/pyyaml@5.2" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/994125?format=api", "purl": "pkg:deb/debian/pyyaml@3.05-2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1d4s-2baq-wuhk" }, { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-rj4z-edkc-pbdw" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@3.05-2" }, { "url": "http://public2.vulnerablecode.io/api/packages/994126?format=api", "purl": "pkg:deb/debian/pyyaml@3.09-5", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1d4s-2baq-wuhk" }, { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-rj4z-edkc-pbdw" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@3.09-5" }, { "url": "http://public2.vulnerablecode.io/api/packages/994127?format=api", "purl": "pkg:deb/debian/pyyaml@3.09-5%2Bdeb6u1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1d4s-2baq-wuhk" }, { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-rj4z-edkc-pbdw" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@3.09-5%252Bdeb6u1" }, { "url": "http://public2.vulnerablecode.io/api/packages/994128?format=api", "purl": "pkg:deb/debian/pyyaml@3.10-4%2Bdeb7u1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1d4s-2baq-wuhk" }, { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-rj4z-edkc-pbdw" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@3.10-4%252Bdeb7u1" }, { "url": "http://public2.vulnerablecode.io/api/packages/1052939?format=api", "purl": "pkg:deb/debian/pyyaml@3.11-2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1d4s-2baq-wuhk" }, { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@3.11-2" }, { "url": "http://public2.vulnerablecode.io/api/packages/1052940?format=api", "purl": "pkg:deb/debian/pyyaml@3.12-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1d4s-2baq-wuhk" }, { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@3.12-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/1052941?format=api", "purl": "pkg:deb/debian/pyyaml@3.13-2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1d4s-2baq-wuhk" }, { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@3.13-2" }, { "url": "http://public2.vulnerablecode.io/api/packages/6620?format=api", "purl": "pkg:pypi/pyyaml@5.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-5y6u-xqht-n3ft" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/pyyaml@5.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/10032?format=api", "purl": "pkg:pypi/pyyaml@5.1.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-5y6u-xqht-n3ft" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/pyyaml@5.1.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/10033?format=api", "purl": "pkg:pypi/pyyaml@5.1.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-5y6u-xqht-n3ft" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/pyyaml@5.1.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/10034?format=api", "purl": "pkg:pypi/pyyaml@5.2b1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2wh2-rac2-53ax" }, { "vulnerability": "VCID-hrtt-vfbb-87bf" }, { "vulnerability": "VCID-tk2n-xsk7-aqb9" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/pyyaml@5.2b1" } ], "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-20477.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "9.8", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-20477.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2019-20477", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64497", "published_at": "2026-05-07T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.6445", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64466", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64441", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64406", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64447", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64435", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64419", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64371", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64411", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64381", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64477", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64479", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64327", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64445", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00467", "scoring_system": "epss", "scoring_elements": "0.64452", "published_at": "2026-04-18T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2019-20477" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20477", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20477" }, { "reference_url": "https://github.com/advisories/GHSA-3pqx-4fqf-j49f", "reference_id": "", "reference_type": "", "scores": [ { "value": "9.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" }, { "value": "CRITICAL", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "9.3", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-3pqx-4fqf-j49f" }, { "reference_url": "https://github.com/pypa/advisory-database/tree/main/vulns/pyyaml/PYSEC-2020-176.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "9.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" }, { "value": "9.3", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/pypa/advisory-database/tree/main/vulns/pyyaml/PYSEC-2020-176.yaml" }, { "reference_url": "https://github.com/yaml/pyyaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "9.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" }, { "value": "9.3", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/yaml/pyyaml" }, { "reference_url": "https://github.com/yaml/pyyaml/blob/master/CHANGES", "reference_id": "", "reference_type": "", "scores": [ { "value": "9.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" }, { "value": "9.3", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/yaml/pyyaml/blob/master/CHANGES" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN", "reference_id": "", "reference_type": "", "scores": [ { "value": "9.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" }, { "value": "9.3", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN/", "reference_id": "", "reference_type": "", "scores": [], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN/" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4H", "reference_id": "", "reference_type": "", "scores": [ { "value": "9.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" }, { "value": "9.3", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4H" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4H/", "reference_id": "", "reference_type": "", "scores": [], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4H/" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20477", "reference_id": "", "reference_type": "", "scores": [ { "value": "9.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" }, { "value": "9.3", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20477" }, { "reference_url": "https://www.exploit-db.com/download/47655", "reference_id": "", "reference_type": "", "scores": [ { "value": "9.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" }, { "value": "9.3", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://www.exploit-db.com/download/47655" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1806005", "reference_id": "1806005", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1806005" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2020:4641", "reference_id": "RHSA-2020:4641", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2020:4641" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:0420", "reference_id": "RHSA-2021:0420", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:0420" } ], "weaknesses": [ { "cwe_id": 502, "name": "Deserialization of Untrusted Data", "description": "The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid." }, { "cwe_id": 937, "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013." }, { "cwe_id": 1035, "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017." } ], "exploits": [], "severity_range_score": "9.0 - 10.0", "exploitability": "0.5", "weighted_severity": "9.0", "risk_score": 4.5, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-tk2n-xsk7-aqb9" }