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    4 vulnerabilities by kubesphere

    CVE-2026-91923 (GCVE-0-2026-91923)

    Vulnerability from nvd – Published: 2026-09-15 11:00 – Updated: 2026-09-15 11:00
    VLAI
    Title
    KubeSphere through 4.1.3 SSRF via git credential verification endpoint
    Summary
    KubeSphere through 4.1.3 contains a server-side request forgery vulnerability in the git credential verification endpoint that accepts unvalidated caller-supplied URLs without allowlist restrictions. Authenticated attackers can supply arbitrary URLs to reach internal services and exfiltrate basic-auth credentials from Secrets in any namespace by leveraging the endpoint's error response handling.
    Severity
    8.3 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
    7.7 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    kubesphere kubesphere Affected: 0 , ≤ 4.1.3 (custom)
    		Create a notification for this product.
    Date Public
    2026-08-04 00:00
    Credits
    George Chen
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:golang/kubesphere.io/kubesphere",
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          "vendor": "kubesphere",
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              "version": "0",
              "versionType": "custom"
            }
          ]
        }
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      "credits": [
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        }
      ],
      "datePublic": "2026-08-04T00:00:00.000Z",
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        {
          "lang": "en",
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        }
      ],
      "metrics": [
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            "subConfidentialityImpact": "HIGH",
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            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N",
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          "name": "git.go - gitReadVerifyWithBasicAuth passes remoteUrl to origin.List unvalidated",
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          "name": "handler.go - VerifyGitCredential returns the go-git error to the caller",
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        },
        {
          "name": "globalroles.yaml - authenticated GlobalRole grants create on resources.kubesphere.io git",
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        {
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    CVE-2026-71208 (GCVE-0-2026-71208)

    Vulnerability from nvd – Published: 2026-08-05 06:59 – Updated: 2026-08-12 07:44
    VLAI
    Title
    KubeSphere - SSRF via Unvalidated Cluster CRD Connection Endpoint in Cluster Reconciliation
    Summary
    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).
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-05 13:20 UTC
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    kubesphere KubeSphere Affected: 4.0.0 , ≤ 4.1.3-rc.0 (custom)
    		Create a notification for this product.
    Date Public
    2026-08-05 06:59
    Credits
    Ashik Mohamed (ashikmd7)
    Show details on NVD website
    To clipboard 

    {
  "containers": {
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-71208",
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                  },
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                ],
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                "timestamp": "2026-08-05T13:20:09.859595Z",
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        "providerMetadata": {
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    CVE-2026-91923 (GCVE-0-2026-91923)

    Vulnerability from cvelistv5 – Published: 2026-09-15 11:00 – Updated: 2026-09-15 11:00
    VLAI
    Title
    KubeSphere through 4.1.3 SSRF via git credential verification endpoint
    Summary
    KubeSphere through 4.1.3 contains a server-side request forgery vulnerability in the git credential verification endpoint that accepts unvalidated caller-supplied URLs without allowlist restrictions. Authenticated attackers can supply arbitrary URLs to reach internal services and exfiltrate basic-auth credentials from Secrets in any namespace by leveraging the endpoint's error response handling.
    Severity
    8.3 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
    7.7 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    kubesphere kubesphere Affected: 0 , ≤ 4.1.3 (custom)
    		Create a notification for this product.
    Date Public
    2026-08-04 00:00
    Credits
    George Chen
    Show details on NVD website
    To clipboard 

    {
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    "cna": {
      "affected": [
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          "vendor": "kubesphere",
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        }
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    CVE-2026-71208 (GCVE-0-2026-71208)

    Vulnerability from cvelistv5 – Published: 2026-08-05 06:59 – Updated: 2026-08-12 07:44
    VLAI
    Title
    KubeSphere - SSRF via Unvalidated Cluster CRD Connection Endpoint in Cluster Reconciliation
    Summary
    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).
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-05 13:20 UTC
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    kubesphere KubeSphere Affected: 4.0.0 , ≤ 4.1.3-rc.0 (custom)
    		Create a notification for this product.
    Date Public
    2026-08-05 06:59
    Credits
    Ashik Mohamed (ashikmd7)
    Show details on NVD website
    To clipboard 

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          "value": "KubeSphere\u0027s cluster-controller reconciliation (pkg/utils/clusterclient/clusterclient.go, addCluster) processes every Cluster custom resource\u0027s 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)."
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            "confidentialityImpact": "HIGH",
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            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "CWE-918 Server-Side Request Forgery (SSRF)",
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              "type": "CWE"
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          ]
        }
      ],
      "providerMetadata": {
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          "tags": [
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          ],
          "url": "https://github.com/ashikmd7/kubeSphere/blob/main/SSRF%20via%20Cluster%20CRD%20KubeConfig/README.md"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://github.com/kubesphere/kubesphere"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "KubeSphere - SSRF via Unvalidated Cluster CRD Connection Endpoint in Cluster Reconciliation",
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    "assignerShortName": "TuranSec",
    "cveId": "CVE-2026-71208",
    "datePublished": "2026-08-05T06:59:13.308Z",
    "dateReserved": "2026-08-05T06:56:15.799Z",
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