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    4 vulnerabilities by telepresenceio

    CVE-2026-102340 (GCVE-0-2026-102340)

    Vulnerability from nvd – Published: 2026-11-04 20:39 – Updated: 2026-11-09 16:58
    VLAI
    Title
    Telepresence: Traffic Manager gRPC has no auth — any pod claims arbitrary namespace and intercepts services, receiving victim environment secrets
    Summary
    Telepresence enables local development against a remote Kubernetes or OpenShift cluster. Prior to 2.31.0, the Traffic Manager gRPC API on port 8081 accepts unauthenticated cluster-network callers, ArriveAsClient stores a caller-supplied Namespace using only the ManagesNamespace manager watchlist check, and CreateIntercept can target any managed namespace without checking the session's Kubernetes RBAC. An attacker operating any pod with network access to the manager can register in an arbitrary managed namespace, create service intercepts, receive intercepted traffic, and obtain the victim pod's complete container environment, including secrets, tokens, and API keys. The default cluster-wide deployment manages all namespaces. This vulnerability is fixed in 2.31.0.
    Severity
    8.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-09 16:09 UTC
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    • CWE-862 - Missing Authorization
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7834 records in the last 180 days details
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-102339 (GCVE-0-2026-102339)

    Vulnerability from nvd – Published: 2026-11-04 20:35 – Updated: 2026-11-09 16:59
    VLAI
    Title
    Telepresence: Tunnel endpoint accepts caller-supplied session ID with no ownership proof — active client sessions hijackable
    Summary
    Telepresence enables local development against a remote Kubernetes or OpenShift cluster. Prior to 2.31.0, the Traffic Manager Tunnel gRPC streaming endpoint parses a session ID from the first bytes of a caller-controlled message in pkg/tunnel/message.go and passes it to state.Tunnel without verifying that the caller owns the active session. An attacker who obtains a valid active session ID through log leakage, cluster-internal channels, or the unauthenticated ArriveAsClient endpoint can attach a routed tunnel to that session and gain its network routing capabilities. UUID4 session IDs make cold brute force impractical. This vulnerability is fixed in 2.31.0.
    Severity
    8.2 (High)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-09 16:11 UTC
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7834 records in the last 180 days details
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-102340 (GCVE-0-2026-102340)

    Vulnerability from cvelistv5 – Published: 2026-11-04 20:39 – Updated: 2026-11-09 16:58
    VLAI
    Title
    Telepresence: Traffic Manager gRPC has no auth — any pod claims arbitrary namespace and intercepts services, receiving victim environment secrets
    Summary
    Telepresence enables local development against a remote Kubernetes or OpenShift cluster. Prior to 2.31.0, the Traffic Manager gRPC API on port 8081 accepts unauthenticated cluster-network callers, ArriveAsClient stores a caller-supplied Namespace using only the ManagesNamespace manager watchlist check, and CreateIntercept can target any managed namespace without checking the session's Kubernetes RBAC. An attacker operating any pod with network access to the manager can register in an arbitrary managed namespace, create service intercepts, receive intercepted traffic, and obtain the victim pod's complete container environment, including secrets, tokens, and API keys. The default cluster-wide deployment manages all namespaces. This vulnerability is fixed in 2.31.0.
    Severity
    8.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-09 16:09 UTC
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    • CWE-862 - Missing Authorization
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7834 records in the last 180 days details
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-102339 (GCVE-0-2026-102339)

    Vulnerability from cvelistv5 – Published: 2026-11-04 20:35 – Updated: 2026-11-09 16:59
    VLAI
    Title
    Telepresence: Tunnel endpoint accepts caller-supplied session ID with no ownership proof — active client sessions hijackable
    Summary
    Telepresence enables local development against a remote Kubernetes or OpenShift cluster. Prior to 2.31.0, the Traffic Manager Tunnel gRPC streaming endpoint parses a session ID from the first bytes of a caller-controlled message in pkg/tunnel/message.go and passes it to state.Tunnel without verifying that the caller owns the active session. An attacker who obtains a valid active session ID through log leakage, cluster-internal channels, or the unauthenticated ArriveAsClient endpoint can attach a routed tunnel to that session and gain its network routing capabilities. UUID4 session IDs make cold brute force impractical. This vulnerability is fixed in 2.31.0.
    Severity
    8.2 (High)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-09 16:11 UTC
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7834 records in the last 180 days details
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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        {
          "lang": "en",
          "value": "Telepresence enables local development against a remote Kubernetes or OpenShift cluster. Prior to 2.31.0, the Traffic Manager Tunnel gRPC streaming endpoint parses a session ID from the first bytes of a caller-controlled message in pkg/tunnel/message.go and passes it to state.Tunnel without verifying that the caller owns the active session. An attacker who obtains a valid active session ID through log leakage, cluster-internal channels, or the unauthenticated ArriveAsClient endpoint can attach a routed tunnel to that session and gain its network routing capabilities. UUID4 session IDs make cold brute force impractical. This vulnerability is fixed in 2.31.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-04T20:35:34.030Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/telepresenceio/telepresence/security/advisories/GHSA-6j3h-rp73-6rvf",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/telepresenceio/telepresence/security/advisories/GHSA-6j3h-rp73-6rvf"
        },
        {
          "name": "https://github.com/telepresenceio/telepresence/pull/4217",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/telepresenceio/telepresence/pull/4217"
        },
        {
          "name": "https://github.com/telepresenceio/telepresence/commit/1312482488b771742dbedd3015f9a81a27532de6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/telepresenceio/telepresence/commit/1312482488b771742dbedd3015f9a81a27532de6"
        },
        {
          "name": "https://github.com/telepresenceio/telepresence/commit/36458b65a010d2b316af48cd90e193ba190785d9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/telepresenceio/telepresence/commit/36458b65a010d2b316af48cd90e193ba190785d9"
        },
        {
          "name": "https://github.com/telepresenceio/telepresence/releases/tag/v2.31.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/telepresenceio/telepresence/releases/tag/v2.31.0"
        }
      ],
      "source": {
        "advisory": "GHSA-6j3h-rp73-6rvf",
        "discovery": "UNKNOWN"
      },
      "title": "Telepresence: Tunnel endpoint accepts caller-supplied session ID with no ownership proof \u2014 active client sessions hijackable"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-102339",
    "datePublished": "2026-11-04T20:35:34.030Z",
    "dateReserved": "2026-09-28T22:38:42.254Z",
    "dateUpdated": "2026-11-09T16:59:56.924Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}