vuln-cve/data/2026/18xxx/CVE-2026-18905.json

{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-18905",
        "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
        "state": "PUBLISHED",
        "assignerShortName": "ibm",
        "dateReserved": "2026-08-04T20:21:18.671Z",
        "datePublished": "2026-09-04T15:56:28.239Z",
        "dateUpdated": "2026-09-04T18:24:43.388Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
                "shortName": "ibm",
                "dateUpdated": "2026-09-04T15:56:28.239Z"
            },
            "title": "IBM ContextForge MCP Gateway is affected by server-side request forgery via DNS TOCTOU at tool invocation",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-918",
                            "description": "CWE-918 Server-Side Request Forgery (SSRF)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "IBM",
                    "product": "ContextForge MCP Gateway (`mcp-contextforge-gateway`)",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "<= v1.0.6"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:ibm:contextforge-mcp-gateway:*:*:*:*:*:*:*:*"
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "IBM ContextForge MCP Gateway (`mcp-contextforge-gateway`) <= v1.0.6 MCP Context Forge could allow a remote authenticated attacker to obtain sensitive information due to a DNS rebinding vulnerability during tool invocation.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<p>IBM ContextForge MCP Gateway (`mcp-contextforge-gateway`) &lt;= v1.0.6 MCP Context Forge could allow a remote authenticated attacker to obtain sensitive information due to a DNS rebinding vulnerability during tool invocation.</p>"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://www.ibm.com/support/pages/node/7286053",
                    "tags": [
                        "vendor-advisory",
                        "patch"
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "NONE",
                        "baseSeverity": "HIGH",
                        "baseScore": 7.7,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"
                    }
                }
            ],
            "workarounds": [
                {
                    "lang": "en",
                    "value": "Workarounds/Mitigation guidance:\n\nNo complete workaround exists without upgrading. As a partial mitigation, restrict tool-creation\n\npermissions (`tools.create`) to fully trusted users only, limiting the pool of accounts that could\n\nstage a registration with a controlled hostname. This does not eliminate the vulnerability but\n\nreduces exposure in environments where least-privilege access controls are enforced.\n\n\nIBM strongly recommends upgrading to v1.0.7 or higher.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<p><strong>Workarounds/Mitigation guidance</strong>:</p><div><div>No complete workaround exists without upgrading. As a partial mitigation, restrict tool-creation</div><div>permissions (`tools.create`) to fully trusted users only, limiting the pool of accounts that could</div><div>stage a registration with a controlled hostname. This does not eliminate the vulnerability but</div><div>reduces exposure in environments where least-privilege access controls are enforced.</div><br/><div>IBM strongly recommends upgrading to v1.0.7 or higher.</div></div>"
                        }
                    ]
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "IBM strongly recommends addressing the vulnerability now.\n\nProduct(s)Version(s) number and/or range Remediation/Fix/InstructionsIBM ContextForge MCP Gateway<=v1.0.6 https://github.com/IBM/mcp-context-forge/pull/5925_",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<div></div><p><strong>IBM strongly recommends addressing the vulnerability now.</strong></p><div><table><tbody><tr><td><strong>Product(s)</strong></td><td><strong>Version(s) number and/or range </strong></td><td><strong>Remediation/Fix/Instructions</strong></td></tr><tr><td>IBM ContextForge MCP Gateway</td><td>&lt;=v1.0.6</td><td><a href=\"https://ibm.service-now.com/kb_view.do?sysparm_article=KB0021096\" rel=\"nofollow\">Upgrade to v1.0.7 or higher. </a><a href=\"https://github.com/IBM/mcp-context-forge/releases/tag/v1.0.7%29\" rel=\"nofollow\">https://github.com/IBM/mcp-context-forge/releases/tag/v1.0.7</a></td></tr></tbody></table></div><p> Note:</p><div>_Fix merged: 2026-07-29_</div><div>_Fixing PR: <a href=\"https://github.com/IBM/mcp-context-forge/pull/5925_\" rel=\"nofollow\">https://github.com/IBM/mcp-context-forge/pull/5925_</a></div><p></p>"
                        }
                    ]
                }
            ]
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-04T17:39:59.136548Z",
                                "id": "CVE-2026-18905",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-04T18:24:43.388Z"
                }
            }
        ]
    }
}