{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-77360",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-20T19:28:35.245Z",
        "datePublished": "2026-09-16T18:42:45.816Z",
        "dateUpdated": "2026-09-16T19:40:51.991Z"
    },
    "containers": {
        "cna": {
            "title": "oRPC: Vary Header Injection in CORS Plugin leading to potential Cache/CORS Bypass",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-113",
                            "lang": "en",
                            "description": "CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "LOW",
                        "subIntegrityImpact": "LOW",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 6.3,
                        "baseSeverity": "MEDIUM",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/middleapi/orpc/security/advisories/GHSA-j9v4-rhgr-4m5f",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/middleapi/orpc/security/advisories/GHSA-j9v4-rhgr-4m5f"
                },
                {
                    "name": "https://github.com/middleapi/orpc/issues/1661",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/middleapi/orpc/issues/1661"
                },
                {
                    "name": "https://github.com/middleapi/orpc/pull/1662",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/middleapi/orpc/pull/1662"
                },
                {
                    "name": "https://github.com/middleapi/orpc/commit/daabded122a89d323357c4c401e879701864cb2f",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/middleapi/orpc/commit/daabded122a89d323357c4c401e879701864cb2f"
                },
                {
                    "name": "https://github.com/middleapi/orpc/releases/tag/v1.14.8",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/middleapi/orpc/releases/tag/v1.14.8"
                }
            ],
            "affected": [
                {
                    "vendor": "middleapi",
                    "product": "orpc",
                    "versions": [
                        {
                            "version": "< 1.14.8",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-16T18:42:45.816Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to 1.14.8, the @orpc/server CORS plugin in packages/server/src/plugins/cors.ts copies a client's incoming Vary request header into the response instead of controlling Vary as a response-only header and using Origin for request-origin variation. In deployments behind a shared cache, CDN, or reverse proxy that keys responses using Vary, a client can inject arbitrary variation values, pollute cache keys, and cause inconsistent CORS enforcement for other clients. Default non-cached configurations have no established direct confidentiality, integrity, or availability impact. This issue is fixed in version 1.14.8."
                }
            ],
            "source": {
                "advisory": "GHSA-j9v4-rhgr-4m5f",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/middleapi/orpc/issues/1661",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-16T19:40:46.280651Z",
                                "id": "CVE-2026-77360",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-09-16T19:40:51.991Z"
                }
            }
        ]
    }
}