{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "\u003ca href=\"https://www.linkedin.com/in/danielberredo/\"\u003eDaniel Santos\u003c/a\u003e with Microsoft"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      },
      {
        "category": "general",
        "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-26118 Azure MCP Server Tools Elevation of Privilege Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26118"
      },
      {
        "category": "self",
        "summary": "CVE-2026-26118 Azure MCP Server Tools Elevation of Privilege Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-26118.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Azure MCP Server Tools Elevation of Privilege Vulnerability",
    "tracking": {
      "current_release_date": "2026-03-10T07:00:00.000Z",
      "generator": {
        "date": "2026-03-10T17:04:32.314Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-26118",
      "initial_release_date": "2026-03-10T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-03-10T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c2.0.0-beta.17",
            "product": {
              "name": "Azure MCP Server Tools \u003c2.0.0-beta.17",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "2.0.0-beta.17",
            "product": {
              "name": "Azure MCP Server Tools 2.0.0-beta.17",
              "product_id": "20857"
            }
          }
        ],
        "category": "product_name",
        "name": "Azure MCP Server Tools"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-26118",
      "cwe": {
        "id": "CWE-918",
        "name": "Server-Side Request Forgery (SSRF)"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "An attacker could exploit this issue by sending specially crafted input to an Azure Model Context Protocol (MCP) Server tool that accepts user\u2011provided parameters. If the attacker can interact with the MCP\u2011backed agent, they can submit a malicious URL in place of a normal Azure resource identifier. The MCP Server then sends an outbound request to that URL and, in doing so, may include its managed identity token. This allows the attacker to capture that token without requiring administrative access.",
          "title": "How could an attacker exploit this vulnerability?"
        },
        {
          "category": "faq",
          "text": "A successful attacker could obtain the permissions associated with the MCP Server\u2019s managed identity. This may allow the attacker to access or perform actions on any resources that the managed identity is authorized to reach. The attacker does not gain broader tenant\u2011level or administrator permissions; only those tied to the compromised managed identity.",
          "title": "What privileges could be gained by an attacker who successfully exploited the vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "20857"
        ],
        "known_affected": [
          "1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-26118 Azure MCP Server Tools Elevation of Privilege Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26118"
        },
        {
          "category": "self",
          "summary": "CVE-2026-26118 Azure MCP Server Tools Elevation of Privilege Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-26118.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-03-10T07:00:00.000Z",
          "details": "2.0.0-beta.17:Security Update:https://github.com/microsoft/mcp/blob/main/servers/Azure.Mcp.Server/CHANGELOG.md#200-beta17-2026-02-05",
          "product_ids": [
            "1"
          ],
          "url": "https://github.com/microsoft/mcp/blob/main/servers/Azure.Mcp.Server/CHANGELOG.md#200-beta17-2026-02-05"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 7.7,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Elevation of Privilege"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Azure MCP Server Tools Elevation of Privilege Vulnerability"
    }
  ]
}