Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/63381?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/63381?format=api", "vulnerability_id": "VCID-5gs2-jpsz-jbfu", "summary": "A use-after-free vulnerability can occur in AssertWorkerThread due to a race condition with shared workers. This results in a potentially exploitable crash.", "aliases": [ { "alias": "CVE-2019-9821" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/371350?format=api", "purl": "pkg:alpm/archlinux/firefox@67.0-1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/firefox@67.0-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/582153?format=api", "purl": "pkg:deb/debian/firefox@67.0-2?distro=sid", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@67.0-2%3Fdistro=sid" }, { "url": "http://public2.vulnerablecode.io/api/packages/582059?format=api", "purl": "pkg:deb/debian/firefox@149.0-1?distro=sid", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@149.0-1%3Fdistro=sid" }, { "url": "http://public2.vulnerablecode.io/api/packages/1059611?format=api", "purl": "pkg:deb/debian/firefox@149.0.2-1?distro=sid", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@149.0.2-1%3Fdistro=sid" }, { "url": "http://public2.vulnerablecode.io/api/packages/1076056?format=api", "purl": "pkg:deb/debian/firefox@150.0-1?distro=sid", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@150.0-1%3Fdistro=sid" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/371349?format=api", "purl": "pkg:alpm/archlinux/firefox@66.0.5-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-4v74-u3y3-xkh6" }, { "vulnerability": "VCID-5gs2-jpsz-jbfu" }, { "vulnerability": "VCID-7ej9-whhw-97hn" }, { "vulnerability": "VCID-92qb-fqpr-27hm" }, { "vulnerability": "VCID-d636-k6r3-skez" }, { "vulnerability": "VCID-fx8t-41tv-hkdu" }, { "vulnerability": "VCID-g3nf-qnz2-h7gg" }, { "vulnerability": "VCID-k321-r7qq-gbb9" }, { "vulnerability": "VCID-mejk-v3p1-eyfy" }, { "vulnerability": "VCID-q181-ebjc-1qe4" }, { "vulnerability": "VCID-sq1u-5jfc-dyh1" }, { "vulnerability": "VCID-tfry-ch3y-fyb1" }, { "vulnerability": "VCID-ugjs-4tca-d3dk" }, { "vulnerability": "VCID-v2ak-jyep-a3cv" }, { "vulnerability": "VCID-vvpm-3zhz-77dm" }, { "vulnerability": "VCID-w5hu-w7mu-b3g3" }, { "vulnerability": "VCID-z3k2-uhun-pyh3" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/firefox@66.0.5-1" } ], "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-9821.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "8.1", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-9821.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2019-9821", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62069", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62229", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62227", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62234", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62218", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62129", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.6216", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62179", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62197", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62214", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62204", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00424", "scoring_system": "epss", "scoring_elements": "0.62183", "published_at": "2026-04-13T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2019-9821" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L" } ], "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1712749", "reference_id": "1712749", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1712749" }, { "reference_url": "https://security.archlinux.org/ASA-201905-9", "reference_id": "ASA-201905-9", "reference_type": "", "scores": [], "url": "https://security.archlinux.org/ASA-201905-9" }, { "reference_url": "https://security.archlinux.org/AVG-966", "reference_id": "AVG-966", "reference_type": "", "scores": [ { "value": "Critical", "scoring_system": "archlinux", "scoring_elements": "" } ], "url": "https://security.archlinux.org/AVG-966" }, { "reference_url": "https://www.mozilla.org/en-US/security/advisories/mfsa2019-13", "reference_id": "mfsa2019-13", "reference_type": "", "scores": [ { "value": "critical", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2019-13" }, { "reference_url": "https://usn.ubuntu.com/3991-1/", "reference_id": "USN-3991-1", "reference_type": "", "scores": [], "url": "https://usn.ubuntu.com/3991-1/" } ], "weaknesses": [ { "cwe_id": 416, "name": "Use After Free", "description": "Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code." } ], "exploits": [], "severity_range_score": "3.7 - 10.0", "exploitability": "0.5", "weighted_severity": "9.0", "risk_score": 4.5, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-5gs2-jpsz-jbfu" }