CVE-2026-45370

{
  "id": "CVE-2026-45370",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-14T21:16:48.350",
  "lastModified": "2026-10-26T14:10:00.130",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "python-utcp is the python implementation of UTCP. Prior to 1.1.3, _prepare_environment() in cli_communication_protocol.py passes a full copy of os.environ to every CLI subprocess. When combined with CVE-2026-45369, an attacker can exfiltrate all process-level secrets in a single tool call. This vulnerability is fixed in 1.1.3."
    },
    {
      "lang": "es",
      "value": "python-utcp es la implementación en Python de UTCP. Antes de la versión 1.1.3, _prepare_environment() en cli_communication_protocol.py pasa una copia completa de os.environ a cada subproceso CLI. Cuando se combina con CVE-2026-45369, un atacante puede exfiltrar todos los secretos a nivel de proceso en una sola llamada a la herramienta. Esta vulnerabilidad se corrige en la versión 1.1.3."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "universal-tool-calling-protocol",
          "product": "python-utcp",
          "versions": [
            {
              "version": "< 1.1.2",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 4.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-15T11:23:35.354622Z",
          "id": "CVE-2026-45370",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-526"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-5v57-8rxj-3p2r",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-5v57-8rxj-3p2r",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}