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Lookup for vulnerable packages by Package URL.

Purlpkg:golang/k8s.io/kubernetes@1.21.0
Typegolang
Namespacek8s.io
Namekubernetes
Version1.21.0
Qualifiers
Subpath
Is_vulnerabletrue
Next_non_vulnerable_version1.21.1
Latest_non_vulnerable_version1.34.2
Affected_by_vulnerabilities
0
url VCID-jjnq-w1uh-dudy
vulnerability_id VCID-jjnq-w1uh-dudy
summary 
Incomplete List of Disallowed Inputs in Kubernetes
A 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
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25737.json
reference_id
reference_type
scores
0
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
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2021-25737
reference_id
reference_type
scores
0
value 0.00379
scoring_system epss
scoring_elements 0.59401
published_at 2026-04-24T12:55:00Z
1
value 0.00379
scoring_system epss
scoring_elements 0.59426
published_at 2026-04-21T12:55:00Z
2
value 0.00379
scoring_system epss
scoring_elements 0.59444
published_at 2026-04-18T12:55:00Z
3
value 0.00379
scoring_system epss
scoring_elements 0.59438
published_at 2026-04-16T12:55:00Z
4
value 0.00379
scoring_system epss
scoring_elements 0.59406
published_at 2026-04-13T12:55:00Z
5
value 0.00379
scoring_system epss
scoring_elements 0.59424
published_at 2026-04-12T12:55:00Z
6
value 0.00379
scoring_system epss
scoring_elements 0.59441
published_at 2026-04-11T12:55:00Z
7
value 0.00379
scoring_system epss
scoring_elements 0.59422
published_at 2026-04-09T12:55:00Z
8
value 0.00379
scoring_system epss
scoring_elements 0.59408
published_at 2026-04-08T12:55:00Z
9
value 0.00379
scoring_system epss
scoring_elements 0.59293
published_at 2026-04-01T12:55:00Z
10
value 0.00379
scoring_system epss
scoring_elements 0.59357
published_at 2026-04-07T12:55:00Z
11
value 0.00379
scoring_system epss
scoring_elements 0.59367
published_at 2026-04-02T12:55:00Z
12
value 0.00379
scoring_system epss
scoring_elements 0.59391
published_at 2026-04-04T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2021-25737
2
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
3
reference_url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
reference_id
reference_type
scores
0
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
4
reference_url https://github.com/kubernetes/kubernetes
reference_id
reference_type
scores
0
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
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/kubernetes/kubernetes
5
reference_url https://github.com/kubernetes/kubernetes/issues/102106
reference_id
reference_type
scores
0
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
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/kubernetes/kubernetes/issues/102106
6
reference_url https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY
reference_id
reference_type
scores
0
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
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY
7
reference_url https://nvd.nist.gov/vuln/detail/CVE-2021-25737
reference_id
reference_type
scores
0
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
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2021-25737
8
reference_url https://security.netapp.com/advisory/ntap-20211004-0004
reference_id
reference_type
scores
0
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
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://security.netapp.com/advisory/ntap-20211004-0004
9
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
10
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
11
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
12
reference_url https://security.archlinux.org/AVG-1970
reference_id AVG-1970
reference_type
scores
0
value Low
scoring_system archlinux
scoring_elements
url https://security.archlinux.org/AVG-1970
13
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
0
url pkg:golang/k8s.io/kubernetes@1.21.1
purl pkg:golang/k8s.io/kubernetes@1.21.1
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:golang/k8s.io/kubernetes@1.21.1
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
0
url VCID-w9b7-vajk-3kdq
vulnerability_id VCID-w9b7-vajk-3kdq
summary 
Kube-proxy may unintentionally forward traffic
Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port (`spec.ports[*].port`) as a LoadBalancer Service when the LoadBalancer controller does not set the `status.loadBalancer.ingress[].ip` field. Clusters 
where the LoadBalancer controller sets the `status.loadBalancer.ingress[].ip` field are unaffected.
references
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25736.json
reference_id
reference_type
scores
0
value 5.8
scoring_system cvssv3
scoring_elements CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25736.json
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2021-25736
reference_id
reference_type
scores
0
value 0.0008
scoring_system epss
scoring_elements 0.23573
published_at 2026-04-24T12:55:00Z
1
value 0.0008
scoring_system epss
scoring_elements 0.23684
published_at 2026-04-21T12:55:00Z
2
value 0.0008
scoring_system epss
scoring_elements 0.23706
published_at 2026-04-18T12:55:00Z
3
value 0.0008
scoring_system epss
scoring_elements 0.23716
published_at 2026-04-16T12:55:00Z
4
value 0.0008
scoring_system epss
scoring_elements 0.23705
published_at 2026-04-13T12:55:00Z
5
value 0.0008
scoring_system epss
scoring_elements 0.23762
published_at 2026-04-12T12:55:00Z
6
value 0.0008
scoring_system epss
scoring_elements 0.23806
published_at 2026-04-11T12:55:00Z
7
value 0.0008
scoring_system epss
scoring_elements 0.23791
published_at 2026-04-09T12:55:00Z
8
value 0.0008
scoring_system epss
scoring_elements 0.23744
published_at 2026-04-08T12:55:00Z
9
value 0.0008
scoring_system epss
scoring_elements 0.23674
published_at 2026-04-07T12:55:00Z
10
value 0.0008
scoring_system epss
scoring_elements 0.23846
published_at 2026-04-02T12:55:00Z
11
value 0.0008
scoring_system epss
scoring_elements 0.23887
published_at 2026-04-04T12:55:00Z
12
value 0.0008
scoring_system epss
scoring_elements 0.23729
published_at 2026-04-01T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2021-25736
2
reference_url https://github.com/kubernetes/kubernetes
reference_id
reference_type
scores
0
value 5.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/kubernetes/kubernetes
3
reference_url https://github.com/kubernetes/kubernetes/commit/b014610de3e5cf1bb0f7844b5758d29fc18b75e6
reference_id
reference_type
scores
0
value 5.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/kubernetes/kubernetes/commit/b014610de3e5cf1bb0f7844b5758d29fc18b75e6
4
reference_url https://github.com/kubernetes/kubernetes/pull/99958
reference_id
reference_type
scores
0
value 5.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
2
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-12T14:39:48Z/
url https://github.com/kubernetes/kubernetes/pull/99958
5
reference_url https://groups.google.com/g/kubernetes-security-announce/c/lIoOPObO51Q/m/O15LOazPAgAJ
reference_id
reference_type
scores
0
value 5.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
2
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-12T14:39:48Z/
url https://groups.google.com/g/kubernetes-security-announce/c/lIoOPObO51Q/m/O15LOazPAgAJ
6
reference_url https://nvd.nist.gov/vuln/detail/CVE-2021-25736
reference_id
reference_type
scores
0
value 5.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2021-25736
7
reference_url https://security.netapp.com/advisory/ntap-20231221-0003
reference_id
reference_type
scores
0
value 5.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://security.netapp.com/advisory/ntap-20231221-0003
8
reference_url https://bugzilla.redhat.com/show_bug.cgi?id=1946538
reference_id 1946538
reference_type
scores
url https://bugzilla.redhat.com/show_bug.cgi?id=1946538
9
reference_url https://security.netapp.com/advisory/ntap-20231221-0003/
reference_id ntap-20231221-0003
reference_type
scores
0
value 5.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-12T14:39:48Z/
url https://security.netapp.com/advisory/ntap-20231221-0003/
10
reference_url https://access.redhat.com/errata/RHSA-2021:2130
reference_id RHSA-2021:2130
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:2130
fixed_packages
0
url pkg:golang/k8s.io/kubernetes@1.21.0
purl pkg:golang/k8s.io/kubernetes@1.21.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-jjnq-w1uh-dudy
resource_url http://public2.vulnerablecode.io/packages/pkg:golang/k8s.io/kubernetes@1.21.0
aliases CVE-2021-25736, GHSA-35c7-w35f-xwgh
risk_score null
exploitability null
weighted_severity null
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-w9b7-vajk-3kdq
Risk_score3.1
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:golang/k8s.io/kubernetes@1.21.0