{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-73555",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-12T20:53:46.380Z",
        "datePublished": "2026-08-13T14:50:03.539Z",
        "dateUpdated": "2026-08-14T15:57:23.396Z"
    },
    "containers": {
        "cna": {
            "title": "vLLM: Unauthenticated Internal Path and Username Disclosure via Validation Error Messages",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-209",
                            "lang": "en",
                            "description": "CWE-209: Generation of Error Message Containing Sensitive Information",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/vllm-project/vllm/security/advisories/GHSA-hwrm-c4cx-rf4j",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/vllm-project/vllm/security/advisories/GHSA-hwrm-c4cx-rf4j"
                },
                {
                    "name": "https://github.com/vllm-project/vllm/pull/46415",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vllm-project/vllm/pull/46415"
                },
                {
                    "name": "https://github.com/vllm-project/vllm/commit/e87521626febe2763f997691d1599de4175f4324",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vllm-project/vllm/commit/e87521626febe2763f997691d1599de4175f4324"
                },
                {
                    "name": "https://github.com/vllm-project/vllm/releases/tag/v0.26.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vllm-project/vllm/releases/tag/v0.26.0"
                }
            ],
            "affected": [
                {
                    "vendor": "vllm-project",
                    "product": "vllm",
                    "versions": [
                        {
                            "version": "< 0.26.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-13T14:50:03.539Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "vLLM is an inference and serving engine for large language models. Prior to 0.26.0, the validation_exception_handler in vllm/entrypoints/openai/server_utils.py converts FastAPI RequestValidationError objects with str(exc), and sanitize_message in vllm/entrypoints/utils.py does not remove traceback-style file paths, allowing unauthenticated malformed JSON requests to /v1/chat/completions, /v1/completions, /tokenize, and /detokenize to disclose the OS username, home and virtual-environment paths, Python version, internal package structure, line numbers, and endpoint handler names. This issue is fixed in version 0.26.0."
                }
            ],
            "source": {
                "advisory": "GHSA-hwrm-c4cx-rf4j",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-14T15:57:13.055942Z",
                                "id": "CVE-2026-73555",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2026-08-14T15:57:23.396Z"
                }
            }
        ]
    }
}