{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-82456",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-08-29T13:22:59.955Z",
        "datePublished": "2026-08-29T13:47:57.447Z",
        "dateUpdated": "2026-08-29T13:47:57.447Z"
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                "dateUpdated": "2026-08-29T13:47:57.447Z"
            },
            "datePublic": "2026-08-25T00:00:00.000Z",
            "title": "argocd-mcp 0.8.0 Authentication Bypass via Unauthenticated HTTP",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "argocd-mcp 0.8.0 binds its HTTP transport to every network interface and accepts MCP sessions without requiring caller credentials when ARGOCD_API_TOKEN is configured. Attackers who can reach the listener can invoke the full tool surface using the operator's stored token to create applications, request syncs, and modify Argo CD resources."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Binding to an Unrestricted IP Address",
                            "cweId": "CWE-1327",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "argoproj-labs",
                    "product": "argocd-mcp",
                    "collectionURL": "https://github.com/argoproj-labs/mcp-for-argocd",
                    "repo": "https://github.com/argoproj-labs/mcp-for-argocd",
                    "versions": [
                        {
                            "version": "0.8.0",
                            "lessThan": "0.9.0",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
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                        "version": "4.0",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "HIGH",
                        "subIntegrityImpact": "HIGH",
                        "subAvailabilityImpact": "HIGH",
                        "baseScore": 10,
                        "baseSeverity": "CRITICAL"
                    }
                },
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                    "cvssV3_1": {
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                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "HIGH",
                        "baseScore": 10,
                        "baseSeverity": "CRITICAL"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/argoproj-labs/mcp-for-argocd/security/advisories/GHSA-rp45-5x3v-48mr",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "name": "GitHub Security Advisory (GHSA-rp45-5x3v-48mr)"
                },
                {
                    "url": "https://github.com/argoproj-labs/mcp-for-argocd",
                    "tags": [
                        "product"
                    ]
                },
                {
                    "name": "VulnCheck Advisory: argocd-mcp 0.8.0 Authentication Bypass via Unauthenticated HTTP",
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/argocd-mcp-0.8.0-authentication-bypass-via-unauthenticated-http"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "shmulc8",
                    "type": "reporter"
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            ],
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}