CVE-2026-53577

{
  "id": "CVE-2026-53577",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-26T22:16:32.967",
  "lastModified": "2026-10-25T17:10:00.197",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the previewFileFromExecution endpoint (GET /api/v1/{tenant}/executions/{executionId}/file/preview) contains an access control bypass that allows any authenticated user to read output files from any other execution within the same tenant, bypassing execution-level and namespace-level isolation. This vulnerability is fixed in 1.0.45 and 1.3.21."
    },
    {
      "lang": "es",
      "value": "Kestra es una plataforma de orquestación de código abierto y basada en eventos. Antes de las versiones 1.0.45 y 1.3.21, el endpoint previewFileFromExecution (GET /API/v1/{tenant}/executions/{executionId}/file/preview) contiene un bypass de control de acceso que permite a cualquier usuario autenticado leer archivos de salida de cualquier otra ejecución dentro del mismo tenant, eludiendo el aislamiento a nivel de ejecución y a nivel de namespace. Esta vulnerabilidad está corregida en las versiones 1.0.45 y 1.3.21."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "kestra-io",
          "product": "kestra",
          "versions": [
            {
              "version": "< 1.0.45",
              "status": "affected"
            },
            {
              "version": ">= 1.1.0, < 1.3.21",
              "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:U/C:H/I:N/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-27T03:15:19.214267Z",
          "id": "CVE-2026-53577",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:kestra:kestra:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.0.45",
              "matchCriteriaId": "ADC0ED79-69EF-4A2A-9F07-4791ED97124F"
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              "versionStartIncluding": "1.1.0",
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  "references": [
    {
      "url": "https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
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        "Mitigation",
        "Vendor Advisory"
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}