{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-4525",
        "assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
        "state": "PUBLISHED",
        "assignerShortName": "HashiCorp",
        "dateReserved": "2026-03-20T17:47:40.835Z",
        "datePublished": "2026-04-17T03:00:47.561Z",
        "dateUpdated": "2026-04-17T03:00:47.561Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "platforms": [
                        "64 bit",
                        "32 bit",
                        "x86",
                        "ARM",
                        "MacOS",
                        "Windows",
                        "Linux"
                    ],
                    "product": "Vault",
                    "repo": "https://github.com/hashicorp/vault",
                    "vendor": "HashiCorp",
                    "versions": [
                        {
                            "lessThan": "2.0.0",
                            "status": "affected",
                            "version": "0.11.2",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "platforms": [
                        "64 bit",
                        "32 bit",
                        "x86",
                        "ARM",
                        "MacOS",
                        "Windows",
                        "Linux"
                    ],
                    "product": "Vault Enterprise",
                    "repo": "https://github.com/hashicorp/vault",
                    "vendor": "HashiCorp",
                    "versions": [
                        {
                            "changes": [
                                {
                                    "at": "1.19.16",
                                    "status": "unaffected"
                                },
                                {
                                    "at": "1.20.10",
                                    "status": "unaffected"
                                },
                                {
                                    "at": "1.21.5",
                                    "status": "unaffected"
                                }
                            ],
                            "lessThan": "2.0.0",
                            "status": "affected",
                            "version": "0.11.2",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "<p>If a Vault auth mount is configured to pass through the \"Authorization\" header, and the \"Authorization\" header is used to authenticate to Vault, Vault forwarded the Vault token to the auth plugin backend. Fixed in 2.0.0, 1.21.5, 1.20.10, and 1.19.16.</p><br/>"
                        }
                    ],
                    "value": "If a Vault auth mount is configured to pass through the \"Authorization\" header, and the \"Authorization\" header is used to authenticate to Vault, Vault forwarded the Vault token to the auth plugin backend. Fixed in 2.0.0, 1.21.5, 1.20.10, and 1.19.16."
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-118",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-118: Collect and Analyze Information"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-201",
                            "description": "CWE-201: Insertion of Sensitive Information Into Sent Data",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
                "shortName": "HashiCorp",
                "dateUpdated": "2026-04-17T03:00:47.561Z"
            },
            "references": [
                {
                    "url": "https://discuss.hashicorp.com/t/hcsec-2026-07-vault-may-expose-tokens-to-auth-plugins-due-to-incorrect-header-sanitization/77344"
                }
            ],
            "source": {
                "advisory": "HCSEC-2026-08",
                "discovery": "EXTERNAL"
            },
            "title": "Vault Token Leaked to Backends via Authorization: Bearer Passthrough Header"
        }
    }
}