CVE-2026-71208

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Source
https://cve.org/CVERecord?id=CVE-2026-71208
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71208.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-71208
Published
2026-08-05T06:59:13.308Z
Modified
2026-08-28T11:30:16.174603646Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
KubeSphere - SSRF via Unvalidated Cluster CRD Connection Endpoint in Cluster Reconciliation
Details

KubeSphere's cluster-controller reconciliation (pkg/utils/clusterclient/clusterclient.go, addCluster) processes every Cluster custom resource's connection configuration and immediately calls Discovery.ServerVersion against the CRD-specified Kubernetes API endpoint, which is parsed only for URL syntax (url.Parse) with no allow/deny-list for loopback, RFC1918 private ranges, link-local, or cloud-metadata addresses (e.g. 169.254.169.254).

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71208.json",
    "cwe_ids": [
        "CWE-918"
    ],
    "cna_assigner": "TuranSec"
}
References

Affected packages

Git / github.com/kubesphere/kubesphere

Affected ranges

Type
GIT
Repo
https://github.com/kubesphere/kubesphere
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
887496e7464bfd9bbab71a274340ea9c0b51a060
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "4.0.0"
        },
        {
            "last_affected": "4.1.3-rc.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

advanced-1.*
advanced-1.0.0
advanced-2.*
advanced-2.0.0
advanced-2.0.2
helm-chart-1.*
helm-chart-1.1.2
helm-chart-1.1.3
v2.*
v2.1.0
v3.*
v3.0.0
v3.1.0
v3.1.0-alpha.0
v3.2.0
v3.2.0-alpha.0
v3.2.0-alpha.1
v3.2.0-rc.1
v3.3.0
v3.3.0-alpha.0
v3.3.0-alpha.1
v3.3.0-rc.0
v3.3.0-rc.1
v3.3.0-rc.2
v3.3.0-rc.3
v3.4.0
v3.4.0-rc.0
v4.*
v4.1.1
v4.1.2
v4.1.3-rc.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71208.json"