Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/53009?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/53009?format=api", "vulnerability_id": "VCID-vu3k-upyc-x7av", "summary": "Potential proxy IP restriction bypass in Kubernetes\nAs mitigations to a report from 2019 and CVE-2020-8555, Kubernetes attempts to prevent proxied connections from accessing link-local or localhost networks when making user-driven connections to Services, Pods, Nodes, or StorageClass service providers. As part of this mitigation Kubernetes does a DNS name resolution check and validates that response IPs are not in the link-local (169.254.0.0/16) or localhost (127.0.0.0/8) range. Kubernetes then performs a second DNS resolution without validation for the actual connection. If a non-standard DNS server returns different non-cached responses, a user may be able to bypass the proxy IP restriction and access private networks on the control plane. All versions of Kubernetes are impacted, and there is no fix in place.", "aliases": [ { "alias": "CVE-2020-8562" }, { "alias": "GHSA-qh36-44jv-c8xj" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/926507?format=api", "purl": "pkg:deb/debian/kubernetes@1.20.5%2Breally1.20.2-1?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-42kp-8t9h-dfat" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/kubernetes@1.20.5%252Breally1.20.2-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/926505?format=api", "purl": "pkg:deb/debian/kubernetes@1.20.5%2Breally1.20.2-1.1%2Bdeb12u1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/kubernetes@1.20.5%252Breally1.20.2-1.1%252Bdeb12u1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/926509?format=api", "purl": "pkg:deb/debian/kubernetes@1.32.3%2Bds-2?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/kubernetes@1.32.3%252Bds-2%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/926508?format=api", "purl": "pkg:deb/debian/kubernetes@1.33.4%2Bds-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/kubernetes@1.33.4%252Bds-1%3Fdistro=trixie" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/1081950?format=api", "purl": "pkg:alpm/archlinux/kube-controller-manager@1.23.0-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-4qqj-251q-ykek" }, { "vulnerability": "VCID-vu3k-upyc-x7av" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/kube-controller-manager@1.23.0-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/371014?format=api", "purl": "pkg:alpm/archlinux/kube-proxy@1.23.0-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-4qqj-251q-ykek" }, { "vulnerability": "VCID-vu3k-upyc-x7av" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/kube-proxy@1.23.0-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/1104344?format=api", "purl": "pkg:alpm/archlinux/kube-scheduler@1.23.0-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-4qqj-251q-ykek" }, { "vulnerability": "VCID-vu3k-upyc-x7av" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/kube-scheduler@1.23.0-1" } ], "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-8562.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "2.2", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-8562.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2020-8562", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17612", "published_at": "2026-05-07T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.18062", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17762", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.1785", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.1791", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17926", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17882", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17833", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17775", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17784", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17822", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.1773", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17707", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17663", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17519", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17847", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.18008", "published_at": "2026-04-02T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-8562" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8562", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8562" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "2.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/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": "3.1", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/kubernetes/kubernetes" }, { "reference_url": "https://github.com/kubernetes/kubernetes/issues/101493", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.1", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/kubernetes/kubernetes/issues/101493" }, { "reference_url": "https://github.com/kubernetes/kubernetes/issues/101493#issuecomment-2272095629", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.1", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/kubernetes/kubernetes/issues/101493#issuecomment-2272095629" }, { "reference_url": "https://groups.google.com/g/kubernetes-security-announce/c/-MFX60_wdOY", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.1", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://groups.google.com/g/kubernetes-security-announce/c/-MFX60_wdOY" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8562", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.1", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8562" }, { "reference_url": "https://security.netapp.com/advisory/ntap-20220225-0002", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.1", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://security.netapp.com/advisory/ntap-20220225-0002" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1954914", "reference_id": "1954914", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1954914" }, { "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-1915", "reference_id": "AVG-1915", "reference_type": "", "scores": [ { "value": "Low", "scoring_system": "archlinux", "scoring_elements": "" } ], "url": "https://security.archlinux.org/AVG-1915" } ], "weaknesses": [ { "cwe_id": 367, "name": "Time-of-check Time-of-use (TOCTOU) Race Condition", "description": "The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state." } ], "exploits": [], "severity_range_score": "0.1 - 3.1", "exploitability": "0.5", "weighted_severity": "2.8", "risk_score": 1.4, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-vu3k-upyc-x7av" }