CVE-2024-45388

Status: AnalyzedHigh (7.5)—Exploit

Severity7.5High · CVSS 3.1

Exploitation probability56 %higher than 99% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitAvailableNuclei template (automated mass detection)

Hoverfly is a lightweight service virtualization/ API simulation / API mocking tool for developers and testers. The `/api/v2/simulation` POST handler allows users to create new simulation views from the contents of a user-specified file. This feature can be abused by an attacker to read arbitrary files from the Hoverfly server. Note that, although the code prevents absolute paths from being specified, an attacker can escape out of the `hf.Cfg.ResponsesBodyFilesPath` base path by using `../` segments and reach any arbitrary files.

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This issue was found using the Uncontrolled data used in path expression CodeQL query for python. Users are advised to make sure the final path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, filePath)`) is contained within the expected base path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, "/")`). This issue is also tracked as GHSL-2023-274.

CVSS

Base score: 7.5
Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 56 %
Percentile among all scored CVEs: 99
Score date: 10/21/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Nuclei template (automated mass detection) · Hoverfly < 1.10.3 - Arbitrary File Read

Affected technologies (1)

Hoverfly — Hoverfly

CWEs

CWE-200
CWE-22

References

Show 4 references

Raw JSON (NVD)

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{
  "id": "CVE-2024-45388",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-45388",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
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            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
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          ],
          "version": "2.0.3",
          "timestamp": "2024-09-03T13:52:29.019621Z"
        }
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    "cvssMetricV31": [
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          "scope": "UNCHANGED",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      },
      {
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        "cvssData": {
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "SpectoLabs",
          "product": "hoverfly",
          "versions": [
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          "product": "hoverfly",
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              "version": "0",
              "lessThan": "1.10.3",
              "versionType": "custom"
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          "defaultStatus": "unknown"
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    }
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  "published": "2024-09-02T18:15:38.063",
  "references": [
    {
      "url": "https://codeql.github.com/codeql-query-help/go/go-path-injection",
      "tags": [
        "Not Applicable"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.10.3",
      "tags": [
        "Release Notes"
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    },
    {
      "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-6xx4-x46f-f897",
      "tags": [
        "Exploit",
        "Vendor Advisory"
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      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/spectolabs/hoverfly/blob/15d6ee9ea4e0de67aec5a41c28d21dc147243da0/core/handlers/v2/simulation_handler.go#L87",
      "tags": [
        "Product"
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      "source": "security-advisories@github.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
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      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
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    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Hoverfly is a lightweight service virtualization/ API simulation / API mocking tool for developers and testers. The `/api/v2/simulation` POST handler allows users to create new simulation views from the contents of a user-specified file. This feature can be abused by an attacker to read arbitrary files from the Hoverfly server. Note that, although the code prevents absolute paths from being specified, an attacker can escape out of the `hf.Cfg.ResponsesBodyFilesPath` base path by using `../` segments and reach any arbitrary files. This issue was found using the Uncontrolled data used in path expression CodeQL query for python. Users are advised to make sure the final path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, filePath)`) is contained within the expected base path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, \"/\")`). This issue is also tracked as GHSL-2023-274."
    },
    {
      "lang": "es",
      "value": "Hoverfly es una herramienta liviana de simulación de API/virtualización de servicios/simulación de API para desarrolladores y evaluadores. El controlador POST `/api/v2/simulation` permite a los usuarios crear nuevas vistas de simulación a partir del contenido de un archivo especificado por el usuario. Un atacante puede abusar de esta característica para leer archivos arbitrarios del servidor Hoverfly. Tenga en cuenta que, aunque el código evita que se especifiquen rutas absolutas, un atacante puede escapar de la ruta base `hf.Cfg.ResponsesBodyFilesPath` mediante segmentos `../` y llegar a cualquier archivo arbitrario. Este problema se encontró utilizando la consulta CodeQL de expresión de ruta de datos no controlados para Python. Se recomienda a los usuarios asegurarse de que la ruta final (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, filePath)`) esté contenida dentro de la ruta base esperada (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, \"/\")`). Este problema también se registra como GHSL-2023-274."
    }
  ],
  "lastModified": "2026-06-17T07:54:07.090",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:hoverfly:hoverfly:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2D7086F2-88B8-4148-A8AB-7A49B10DBED1",
              "versionEndExcluding": "1.10.3"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}