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Lookup for vulnerable packages by Package URL.

Purlpkg:deb/debian/pyyaml@5.2-1?distro=trixie
Typedeb
Namespacedebian
Namepyyaml
Version5.2-1
Qualifiers
distro trixie
Subpath
Is_vulnerablefalse
Next_non_vulnerable_version5.3-2
Latest_non_vulnerable_version6.0.3-1
Affected_by_vulnerabilities
Fixing_vulnerabilities
0
url VCID-tk2n-xsk7-aqb9
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.
references
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-20477.json
reference_id
reference_type
scores
0
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
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2019-20477
reference_id
reference_type
scores
0
value 0.00467
scoring_system epss
scoring_elements 0.64445
published_at 2026-04-21T12:55:00Z
1
value 0.00467
scoring_system epss
scoring_elements 0.64452
published_at 2026-04-18T12:55:00Z
2
value 0.00467
scoring_system epss
scoring_elements 0.64411
published_at 2026-04-04T12:55:00Z
3
value 0.00467
scoring_system epss
scoring_elements 0.64441
published_at 2026-04-16T12:55:00Z
4
value 0.00467
scoring_system epss
scoring_elements 0.64406
published_at 2026-04-13T12:55:00Z
5
value 0.00467
scoring_system epss
scoring_elements 0.64447
published_at 2026-04-11T12:55:00Z
6
value 0.00467
scoring_system epss
scoring_elements 0.64435
published_at 2026-04-12T12:55:00Z
7
value 0.00467
scoring_system epss
scoring_elements 0.64419
published_at 2026-04-08T12:55:00Z
8
value 0.00467
scoring_system epss
scoring_elements 0.64371
published_at 2026-04-07T12:55:00Z
9
value 0.00467
scoring_system epss
scoring_elements 0.64327
published_at 2026-04-01T12:55:00Z
10
value 0.00467
scoring_system epss
scoring_elements 0.64381
published_at 2026-04-02T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2019-20477
2
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
3
reference_url https://github.com/advisories/GHSA-3pqx-4fqf-j49f
reference_id
reference_type
scores
0
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
1
value CRITICAL
scoring_system cvssv3.1_qr
scoring_elements
2
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
3
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://github.com/advisories/GHSA-3pqx-4fqf-j49f
4
reference_url https://github.com/pypa/advisory-database/tree/main/vulns/pyyaml/PYSEC-2020-176.yaml
reference_id
reference_type
scores
0
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
1
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
2
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://github.com/pypa/advisory-database/tree/main/vulns/pyyaml/PYSEC-2020-176.yaml
5
reference_url https://github.com/yaml/pyyaml
reference_id
reference_type
scores
0
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
1
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
2
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://github.com/yaml/pyyaml
6
reference_url https://github.com/yaml/pyyaml/blob/master/CHANGES
reference_id
reference_type
scores
0
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
1
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
2
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://github.com/yaml/pyyaml/blob/master/CHANGES
7
reference_url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN
reference_id
reference_type
scores
0
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
1
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
2
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN
8
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/
9
reference_url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4H
reference_id
reference_type
scores
0
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
1
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
2
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4H
10
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/
11
reference_url https://nvd.nist.gov/vuln/detail/CVE-2019-20477
reference_id
reference_type
scores
0
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
1
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
2
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2019-20477
12
reference_url https://www.exploit-db.com/download/47655
reference_id
reference_type
scores
0
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
1
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
2
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://www.exploit-db.com/download/47655
13
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
14
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
15
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
fixed_packages
0
url pkg:deb/debian/pyyaml@5.2-1?distro=trixie
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
1
url pkg:deb/debian/pyyaml@5.3.1-5?distro=trixie
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
2
url pkg:deb/debian/pyyaml@6.0-3?distro=trixie
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
3
url pkg:deb/debian/pyyaml@6.0.2-1?distro=trixie
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
4
url pkg:deb/debian/pyyaml@6.0.3-1?distro=trixie
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
aliases CVE-2019-20477, GHSA-3pqx-4fqf-j49f, PYSEC-2020-176
risk_score 4.5
exploitability 0.5
weighted_severity 9.0
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-tk2n-xsk7-aqb9
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:deb/debian/pyyaml@5.2-1%3Fdistro=trixie