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    6 vulnerabilities by juev

    CVE-2026-47724 (GCVE-0-2026-47724)

    Vulnerability from nvd – Published: 2026-07-23 20:20 – Updated: 2026-07-23 20:20
    VLAI
    Title
    nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalation
    Summary
    nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.4, the `/api/v1/*` route surface trusts the bearer token alone for authorisation on most endpoints. The codebase itself admits this at `internal/api/hosts.go:384`: "API trusts the bearer token for authorisation; per-CA ownership is enforced only in the Web layer." The Web UI gates state-changing routes through `loadAccessibleCA` (`internal/web/cas.go`); CA-management endpoints in `internal/api/cas.go` ALSO have proper `canAccessCA` gates. The gap is on the host, network, firewall, mobile-bundle, and most operator endpoints. Combined with the per-operator CA model from ADR 0002, this gives any non-admin operator API key broad cross-tenant access — instant privilege escalation in the worst case. Version 0.3.4 fixes the issue.
    Severity
    9.9 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    juev nebula-mesh Affected: < 0.3.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "nebula-mesh",
          "vendor": "juev",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.3.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.4, the `/api/v1/*` route surface trusts the bearer token alone for authorisation on most endpoints. The codebase itself admits this at `internal/api/hosts.go:384`: \"API trusts the bearer token for authorisation; per-CA ownership is enforced only in the Web layer.\" The Web UI gates state-changing routes through `loadAccessibleCA` (`internal/web/cas.go`); CA-management endpoints in `internal/api/cas.go` ALSO have proper `canAccessCA` gates. The gap is on the host, network, firewall, mobile-bundle, and most operator endpoints. Combined with the per-operator CA model from ADR 0002, this gives any non-admin operator API key broad cross-tenant access \u2014 instant privilege escalation in the worst case. Version 0.3.4 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-23T20:20:59.494Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-598g-h2vc-h5vg",
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          ],
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        },
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          ],
          "url": "https://github.com/forgekeep/nebula-mesh/commit/9d8bcd7667ecd0c2975cc71fb35a02fe131f76f2"
        }
      ],
      "source": {
        "advisory": "GHSA-598g-h2vc-h5vg",
        "discovery": "UNKNOWN"
      },
      "title": "nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-47724",
    "datePublished": "2026-07-23T20:20:59.494Z",
    "dateReserved": "2026-05-19T21:29:25.482Z",
    "dateUpdated": "2026-07-23T20:20:59.494Z",
    "state": "PUBLISHED"
  },
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}

    CVE-2026-47723 (GCVE-0-2026-47723)

    Vulnerability from nvd – Published: 2026-07-23 20:17 – Updated: 2026-07-24 13:54
    VLAI
    Title
    nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)
    Summary
    nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.1, none of the response paths in `internal/web/` or `internal/api/` set the standard browser-security headers. `grep` for `Content-Security-Policy`, `X-Frame-Options`, `Strict-Transport-Security`, `X-Content-Type-Options`, `Referrer-Policy` returns zero matches across the codebase. Version 0.3.1 fixes the issue.
    Severity
    7.1 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-1021 - Improper Restriction of Rendered UI Layers or Frames
    Assigner
    References
    Impacted products
    Vendor Product Version
    juev nebula-mesh Affected: < 0.3.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
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      {
        "metrics": [
          {
            "other": {
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
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            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
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      ],
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            }
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      "providerMetadata": {
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      },
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          "name": "https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-w7w5-5gcp-38rw",
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          "url": "https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-w7w5-5gcp-38rw"
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        {
          "name": "https://github.com/forgekeep/nebula-mesh/commit/b45fda5476c41ffcff1ca23058aef0fb851359c1",
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        },
        {
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          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.1"
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      ],
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        "advisory": "GHSA-w7w5-5gcp-38rw",
        "discovery": "UNKNOWN"
      },
      "title": "nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)"
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  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-47723",
    "datePublished": "2026-07-23T20:17:26.478Z",
    "dateReserved": "2026-05-19T21:29:25.482Z",
    "dateUpdated": "2026-07-24T13:54:01.417Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-47722 (GCVE-0-2026-47722)

    Vulnerability from nvd – Published: 2026-07-23 19:19 – Updated: 2026-07-24 11:11
    VLAI
    Title
    nebula-mesh: Host advanced overrides allow YAML injection into agent config.yml
    Summary
    nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, `internal/configgen/generator.go:86,108,119` interpolates the operator-supplied `ListenHost` and `TunDevice` fields raw into a `text/template` that produces the agent's `config.yml`. `internal/web/advanced.go:20-35` accepts both with only `strings.TrimSpace` — no character or shape validation. Version 0.3.2 fixes the issue.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    juev nebula-mesh Affected: < 0.3.2
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-47722",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
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                    "Technical Impact": "total"
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                "role": "CISA Coordinator",
                "timestamp": "2026-07-24T11:11:06.602968Z",
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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        {
          "product": "nebula-mesh",
          "vendor": "juev",
          "versions": [
            {
              "status": "affected",
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            }
          ]
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      ],
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          "value": "nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, `internal/configgen/generator.go:86,108,119` interpolates the operator-supplied `ListenHost` and `TunDevice` fields raw into a `text/template` that produces the agent\u0027s `config.yml`. `internal/web/advanced.go:20-35` accepts both with only `strings.TrimSpace` \u2014 no character or shape validation. Version 0.3.2 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
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          ],
          "url": "https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-7hp6-g3pq-3pc3"
        },
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          "tags": [
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  },
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}

    CVE-2026-47724 (GCVE-0-2026-47724)

    Vulnerability from cvelistv5 – Published: 2026-07-23 20:20 – Updated: 2026-07-23 20:20
    VLAI
    Title
    nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalation
    Summary
    nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.4, the `/api/v1/*` route surface trusts the bearer token alone for authorisation on most endpoints. The codebase itself admits this at `internal/api/hosts.go:384`: "API trusts the bearer token for authorisation; per-CA ownership is enforced only in the Web layer." The Web UI gates state-changing routes through `loadAccessibleCA` (`internal/web/cas.go`); CA-management endpoints in `internal/api/cas.go` ALSO have proper `canAccessCA` gates. The gap is on the host, network, firewall, mobile-bundle, and most operator endpoints. Combined with the per-operator CA model from ADR 0002, this gives any non-admin operator API key broad cross-tenant access — instant privilege escalation in the worst case. Version 0.3.4 fixes the issue.
    Severity
    9.9 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    juev nebula-mesh Affected: < 0.3.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
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      "affected": [
        {
          "product": "nebula-mesh",
          "vendor": "juev",
          "versions": [
            {
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        }
      ],
      "metrics": [
        {
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.9,
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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        }
      ],
      "source": {
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      },
      "title": "nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalation"
    }
  },
  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-47724",
    "datePublished": "2026-07-23T20:20:59.494Z",
    "dateReserved": "2026-05-19T21:29:25.482Z",
    "dateUpdated": "2026-07-23T20:20:59.494Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-47723 (GCVE-0-2026-47723)

    Vulnerability from cvelistv5 – Published: 2026-07-23 20:17 – Updated: 2026-07-24 13:54
    VLAI
    Title
    nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)
    Summary
    nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.1, none of the response paths in `internal/web/` or `internal/api/` set the standard browser-security headers. `grep` for `Content-Security-Policy`, `X-Frame-Options`, `Strict-Transport-Security`, `X-Content-Type-Options`, `Referrer-Policy` returns zero matches across the codebase. Version 0.3.1 fixes the issue.
    Severity
    7.1 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-1021 - Improper Restriction of Rendered UI Layers or Frames
    Assigner
    References
    Impacted products
    Vendor Product Version
    juev nebula-mesh Affected: < 0.3.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-47723",
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                  },
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                  }
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    CVE-2026-47722 (GCVE-0-2026-47722)

    Vulnerability from cvelistv5 – Published: 2026-07-23 19:19 – Updated: 2026-07-24 11:11
    VLAI
    Title
    nebula-mesh: Host advanced overrides allow YAML injection into agent config.yml
    Summary
    nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, `internal/configgen/generator.go:86,108,119` interpolates the operator-supplied `ListenHost` and `TunDevice` fields raw into a `text/template` that produces the agent's `config.yml`. `internal/web/advanced.go:20-35` accepts both with only `strings.TrimSpace` — no character or shape validation. Version 0.3.2 fixes the issue.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    juev nebula-mesh Affected: < 0.3.2
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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