FKIE_CVE-2026-11431

Vulnerability from fkie_nvd - Published: 2026-06-05 22:16 - Updated: 2026-07-23 07:10
Severity
8.3 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Summary
A path traversal vulnerability exists in the Projects Service download endpoint shared by Altium Enterprise Server and Altium 365. An authenticated user can supply a crafted path parameter that bypasses validation, allowing arbitrary files (including entire directories returned as archives) to be read from the server filesystem. Because the readable files include service configuration and credential material, exploitation can be used to gather information enabling further compromise. The issue can be combined with CVE-2026-11424 to reach the cloud-side endpoint. On multi-tenant Altium 365 deployments, the readable configuration could have exposed credentials shared across services. Altium Enterprise Server is fixed in 8.1.1; the issue has been remediated in Altium 365 at the service level.
References
4760f414-e1ae-4ff1-bdad-c7a9c3538b79https://www.altium.com/platform/security-compliance/security-advisories
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Projects Service (DownloadReleaseNode action)"
          ],
          "platforms": [
            "Web"
          ],
          "product": "Altium Enterprise Server",
          "vendor": "Altium",
          "versions": [
            {
              "lessThan": "8.1.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "modules": [
            "Projects Service (DownloadReleaseNode action)"
          ],
          "platforms": [
            "Web"
          ],
          "product": "Altium 365",
          "vendor": "Altium",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified"
            }
          ]
        }
      ],
      "source": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A path traversal vulnerability exists in the Projects Service download endpoint shared by Altium Enterprise Server and Altium 365. An authenticated user can supply a crafted path parameter that bypasses validation, allowing arbitrary files (including entire directories returned as archives) to be read from the server filesystem.\n\n\n\n\nBecause the readable files include service configuration and credential material, exploitation can be used to gather information enabling further compromise. The issue can be combined with CVE-2026-11424 to reach the cloud-side endpoint. On multi-tenant Altium 365 deployments, the readable configuration could have exposed credentials shared across services. Altium Enterprise Server is fixed in 8.1.1; the issue has been remediated in Altium 365 at the service level."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de salto de ruta existe en el endpoint de descarga del Servicio de Proyectos compartido por Altium Enterprise Server y Altium 365. Un usuario autenticado puede proporcionar un par\u00e1metro de ruta manipulado que omite la validaci\u00f3n, permitiendo que archivos arbitrarios (incluyendo directorios completos devueltos como archivos) sean le\u00eddos del sistema de archivos del servidor.\n\nDebido a que los archivos legibles incluyen configuraci\u00f3n del servicio y material de credenciales, la explotaci\u00f3n puede ser utilizada para recopilar informaci\u00f3n que permita un compromiso adicional. El problema puede combinarse con CVE-2026-11424 para alcanzar el endpoint del lado de la nube. En implementaciones multi-inquilino de Altium 365, la configuraci\u00f3n legible podr\u00eda haber expuesto credenciales compartidas entre servicios. Altium Enterprise Server est\u00e1 corregido en 8.1.1; el problema ha sido remediado en Altium 365 a nivel de servicio."
    }
  ],
  "id": "CVE-2026-11431",
  "lastModified": "2026-07-23T07:10:00.113",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.3,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-11431",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-08T13:12:24.668997Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-05T22:16:47.650",
  "references": [
    {
      "source": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79",
      "url": "https://www.altium.com/platform/security-compliance/security-advisories"
    }
  ],
  "sourceIdentifier": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79",
      "type": "Secondary"
    }
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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