{"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"}}]}}

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{"affected": [{"affectedData": [{"product": "orpc", "vendor": "middleapi", "versions": [{"status": "affected", "version": "< 1.14.8"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-77360", "lastModified": "2026-09-16T19:17:38.020", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-16T19:17:38.020", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/middleapi/orpc/commit/daabded122a89d323357c4c401e879701864cb2f"}, {"source": "security-advisories@github.com", "url": "https://github.com/middleapi/orpc/issues/1661"}, {"source": "security-advisories@github.com", "url": "https://github.com/middleapi/orpc/pull/1662"}, {"source": "security-advisories@github.com", "url": "https://github.com/middleapi/orpc/releases/tag/v1.14.8"}, {"source": "security-advisories@github.com", "url": "https://github.com/middleapi/orpc/security/advisories/GHSA-j9v4-rhgr-4m5f"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-113"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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