CVE-2026-53598

{
  "id": "CVE-2026-53598",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-16T16:19:12.990",
  "lastModified": "2026-10-24T20:10:00.137",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Prompty is a markdown file format (.prompty) for LLM prompts. Prior to 2.0.0-beta.2, Prompty loaders expanded ${file:...} references in .prompty frontmatter without enforcing that resolved paths stayed within the prompt directory or allowed roots, allowing an attacker-controlled prompt file to read local files through absolute paths, .. traversal, or symlink escapes. This issue is fixed in versions 2.0.0-beta.2."
    },
    {
      "lang": "es",
      "value": "Prompty es un formato de archivo markdown (.prompty) para prompts de LLM. Antes de la versión 2.0.0-beta.2, los cargadores de Prompty expandían las referencias ${file:...} en el ’frontmatter’ de .prompty sin asegurar que las rutas resueltas permanecieran dentro del directorio del prompt o de las raíces permitidas, permitiendo que un archivo de prompt controlado por un atacante leyera archivos locales a través de rutas absolutas, el recorrido de directorios con ’..’ o escapes de enlaces simbólicos. Este problema está solucionado en las versiones 2.0.0-beta.2."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "microsoft",
          "product": "prompty",
          "versions": [
            {
              "version": "< 2.0.0-beta.2",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-17T14:06:30.453913Z",
          "id": "CVE-2026-53598",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/microsoft/prompty/commit/88ac9948d7d37995edbb2f6d36913436626c39e1",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/microsoft/prompty/security/advisories/GHSA-wxhm-2mq7-7697",
      "source": "[email protected]"
    }
  ]
}