Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/548530?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/548530?format=api", "purl": "pkg:apk/alpine/libxml2@2.9.12-r0?arch=x86&distroversion=v3.11&reponame=main", "type": "apk", "namespace": "alpine", "name": "libxml2", "version": "2.9.12-r0", "qualifiers": { "arch": "x86", "distroversion": "v3.11", "reponame": "main" }, "subpath": "", "is_vulnerable": false, "next_non_vulnerable_version": null, "latest_non_vulnerable_version": null, "affected_by_vulnerabilities": [], "fixing_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/10893?format=api", "vulnerability_id": "VCID-rsvx-3f49-v3an", "summary": "Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion)\nA flaw was found in libxml2. By exploiting an exponential entity expansion attack its possible bypassing all existing protection mechanisms and lead to a denial of service.", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3541.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3541.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-3541", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.0006", "scoring_system": "epss", "scoring_elements": "0.18918", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.0006", "scoring_system": "epss", "scoring_elements": "0.18822", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.0006", "scoring_system": "epss", "scoring_elements": "0.18921", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.0006", "scoring_system": "epss", "scoring_elements": "0.1887", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.0006", "scoring_system": "epss", "scoring_elements": "0.19054", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.0006", "scoring_system": "epss", "scoring_elements": "0.19106", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.0006", "scoring_system": "epss", "scoring_elements": "0.18828", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.0006", "scoring_system": "epss", "scoring_elements": "0.18907", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.0006", "scoring_system": "epss", "scoring_elements": "0.18962", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.0006", "scoring_system": "epss", "scoring_elements": "0.18968", "published_at": "2026-04-11T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-3541" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1950515", "reference_id": "", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1950515" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3541", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3541" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H" } ], "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml" }, { "reference_url": "https://security.netapp.com/advisory/ntap-20210805-0007/", "reference_id": "", "reference_type": "", "scores": [], "url": "https://security.netapp.com/advisory/ntap-20210805-0007/" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988603", "reference_id": "988603", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988603" }, { "reference_url": "https://security.archlinux.org/AVG-1883", "reference_id": "AVG-1883", "reference_type": "", "scores": [ { "value": "High", "scoring_system": "archlinux", "scoring_elements": "" } ], "url": "https://security.archlinux.org/AVG-1883" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3541", "reference_id": "CVE-2021-3541", "reference_type": "", "scores": [], "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3541" }, { "reference_url": "https://security.gentoo.org/glsa/202107-05", "reference_id": "GLSA-202107-05", "reference_type": "", "scores": [], "url": "https://security.gentoo.org/glsa/202107-05" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:2569", "reference_id": "RHSA-2021:2569", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:2569" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2022:1389", "reference_id": "RHSA-2022:1389", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2022:1389" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2022:1390", "reference_id": "RHSA-2022:1390", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2022:1390" }, { "reference_url": "https://usn.ubuntu.com/4991-1/", "reference_id": "USN-4991-1", "reference_type": "", "scores": [], "url": "https://usn.ubuntu.com/4991-1/" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/548530?format=api", "purl": "pkg:apk/alpine/libxml2@2.9.12-r0?arch=x86&distroversion=v3.11&reponame=main", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/libxml2@2.9.12-r0%3Farch=x86&distroversion=v3.11&reponame=main" } ], "aliases": [ "CVE-2021-3541" ], "risk_score": 4.0, "exploitability": "0.5", "weighted_severity": "8.0", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-rsvx-3f49-v3an" } ], "risk_score": null, "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/libxml2@2.9.12-r0%3Farch=x86&distroversion=v3.11&reponame=main" }