FKIE_CVE-2026-21887

Vulnerability from fkie_nvd - Published: 2026-03-12 17:16 - Updated: 2026-06-17 10:19
Severity
7.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Summary
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.8.16, the OpenCTI platform’s data ingestion feature accepts user-supplied URLs without validation and uses the Axios HTTP client with its default configuration (allowAbsoluteUrls: true). This allows attackers to craft requests to arbitrary endpoints, including internal services, because Axios will accept and process absolute URLs. This results in a semi-blind SSRF, as responses may not be fully visible but can still impact internal systems. This vulnerability is fixed in 6.8.16.
References
security-advisories@github.comhttps://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-ffm6-vvph-g5f5Vendor Advisory
Impacted products
Vendor Product Version
citeum opencti *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "opencti",
          "vendor": "OpenCTI-Platform",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.8.16"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
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  "configurations": [
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.8.16, the OpenCTI platform\u2019s data ingestion feature accepts user-supplied URLs without validation and uses the Axios HTTP client with its default configuration (allowAbsoluteUrls: true). This allows attackers to craft requests to arbitrary endpoints, including internal services, because Axios will accept and process absolute URLs. This results in a semi-blind SSRF, as responses may not be fully visible but can still impact internal systems. This vulnerability is fixed in 6.8.16."
    },
    {
      "lang": "es",
      "value": "OpenCTI es una plataforma de c\u00f3digo abierto para gestionar el conocimiento y los observables de inteligencia de amenazas cibern\u00e9ticas. Antes de la versi\u00f3n 6.8.16, la funci\u00f3n de ingesta de datos de la plataforma OpenCTI acepta URLs proporcionadas por el usuario sin validaci\u00f3n y utiliza el cliente HTTP Axios con su configuraci\u00f3n predeterminada (allowAbsoluteUrls: true). Esto permite a los atacantes elaborar solicitudes a puntos finales arbitrarios, incluidos servicios internos, porque Axios aceptar\u00e1 y procesar\u00e1 URLs absolutas. Esto resulta en un SSRF semi-ciego, ya que las respuestas pueden no ser completamente visibles pero a\u00fan pueden impactar sistemas internos. Esta vulnerabilidad se corrige en la versi\u00f3n 6.8.16."
    }
  ],
  "id": "CVE-2026-21887",
  "lastModified": "2026-06-17T10:19:05.640",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
          "version": "3.1"
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        "impactScore": 4.0,
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          "role": "CISA Coordinator",
          "timestamp": "2026-03-12T17:51:53.670909Z",
          "version": "2.0.3"
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  "published": "2026-03-12T17:16:36.813",
  "references": [
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      "tags": [
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          "value": "CWE-918"
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}



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