Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/373813?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/373813?format=api", "purl": "pkg:alpm/archlinux/kube-apiserver@1.21.0-1", "type": "alpm", "namespace": "archlinux", "name": "kube-apiserver", "version": "1.21.0-1", "qualifiers": {}, "subpath": "", "is_vulnerable": true, "next_non_vulnerable_version": "1.21.1-1", "latest_non_vulnerable_version": "1.21.1-1", "affected_by_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/36170?format=api", "vulnerability_id": "VCID-jjnq-w1uh-dudy", "summary": "Incomplete List of Disallowed Inputs in Kubernetes\nA security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25737.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "2.7", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25737.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-25737", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59471", "published_at": "2026-05-09T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59408", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59422", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59441", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59424", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59406", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59438", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59444", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59426", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59401", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59421", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59364", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59412", "published_at": "2026-05-07T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59293", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59367", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59391", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00379", "scoring_system": "epss", "scoring_elements": "0.59357", "published_at": "2026-04-07T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-25737" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25737", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25737" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "2.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N" } ], "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml" }, { "reference_url": "https://github.com/kubernetes/kubernetes", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/kubernetes/kubernetes" }, { "reference_url": "https://github.com/kubernetes/kubernetes/issues/102106", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/kubernetes/kubernetes/issues/102106" }, { "reference_url": "https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25737", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25737" }, { "reference_url": "https://security.netapp.com/advisory/ntap-20211004-0004", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://security.netapp.com/advisory/ntap-20211004-0004" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1954917", "reference_id": "1954917", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1954917" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990793", "reference_id": "990793", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990793" }, { "reference_url": "https://security.archlinux.org/ASA-202106-29", "reference_id": "ASA-202106-29", "reference_type": "", "scores": [], "url": "https://security.archlinux.org/ASA-202106-29" }, { "reference_url": "https://security.archlinux.org/AVG-1970", "reference_id": "AVG-1970", "reference_type": "", "scores": [ { "value": "Low", "scoring_system": "archlinux", "scoring_elements": "" } ], "url": "https://security.archlinux.org/AVG-1970" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:2437", "reference_id": "RHSA-2021:2437", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:2437" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/374808?format=api", "purl": "pkg:alpm/archlinux/kube-apiserver@1.21.1-1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/kube-apiserver@1.21.1-1" } ], "aliases": [ "CVE-2021-25737", "GHSA-mfv7-gq43-w965" ], "risk_score": 3.1, "exploitability": "0.5", "weighted_severity": "6.2", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-jjnq-w1uh-dudy" } ], "fixing_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/47748?format=api", "vulnerability_id": "VCID-jgn7-651b-p3cm", "summary": "Access Restriction Bypass in kube-apiserver\nA vulnerability in Kubernetes `kube-apiserver` could allow node updates to bypass a _Validating Admission Webhook_ and allow unauthorized node updates. The information that is provided to the admission controller could contain old configurations that overwrite values used for validation. Since the overwriting takes place before the validation, this could lead the admission controller to accept requests that should be blocked. The vulnerability can be exploited when an update action on node resources is performed and an admission controller is in place and configured to validate the action.\n\nUsers are only affected by this vulnerability if they are running a _Validating Admission Webhook_ for Nodes that denies admission based partially on the old state of the Node object. It only impacts validating admission plugins that rely on old values in certain fields and does not impact calls from kubelets that go through the built-in NodeRestriction admission plugin.", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25735.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25735.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-25735", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94464", "published_at": "2026-05-09T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94384", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94391", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94403", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94405", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94414", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94418", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.9442", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94422", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94437", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94443", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94446", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94444", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94447", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.14393", "scoring_system": "epss", "scoring_elements": "0.94454", "published_at": "2026-05-07T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-25735" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1937562", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1937562" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25735", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25735" }, { "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:H/UI:N/S:U/C:N/I:H/A:H" } ], "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml" }, { "reference_url": "https://github.com/kubernetes/kubernetes", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/kubernetes/kubernetes" }, { "reference_url": "https://github.com/kubernetes/kubernetes/commit/00e81db174ef7aca497be5f42d87e46d14df2a90", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/kubernetes/kubernetes/commit/00e81db174ef7aca497be5f42d87e46d14df2a90" }, { "reference_url": "https://github.com/kubernetes/kubernetes/issues/100096", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/kubernetes/kubernetes/issues/100096" }, { "reference_url": "https://github.com/kubernetes/kubernetes/pull/99946", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/kubernetes/kubernetes/pull/99946" }, { "reference_url": "https://groups.google.com/g/kubernetes-security-announce/c/FKAGqT4jx9Y", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://groups.google.com/g/kubernetes-security-announce/c/FKAGqT4jx9Y" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25735", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25735" }, { "reference_url": "https://pkg.go.dev/k8s.io/kubernetes@v1.23.5/cmd/kube-apiserver", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://pkg.go.dev/k8s.io/kubernetes@v1.23.5/cmd/kube-apiserver" }, { "reference_url": "https://sysdig.com/blog/cve-2021-25735-kubernetes-admission-bypass", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://sysdig.com/blog/cve-2021-25735-kubernetes-admission-bypass" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990793", "reference_id": "990793", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990793" }, { "reference_url": "https://security.archlinux.org/AVG-1825", "reference_id": "AVG-1825", "reference_type": "", "scores": [ { "value": "Medium", "scoring_system": "archlinux", "scoring_elements": "" } ], "url": "https://security.archlinux.org/AVG-1825" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:2437", "reference_id": "RHSA-2021:2437", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:2437" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/373813?format=api", "purl": "pkg:alpm/archlinux/kube-apiserver@1.21.0-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jjnq-w1uh-dudy" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/kube-apiserver@1.21.0-1" } ], "aliases": [ "CVE-2021-25735", "GHSA-g42g-737j-qx6j" ], "risk_score": 3.1, "exploitability": "0.5", "weighted_severity": "6.2", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-jgn7-651b-p3cm" } ], "risk_score": "3.1", "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/kube-apiserver@1.21.0-1" }