{"id":"CVE-2026-77360","aliases":["GHSA-j9v4-rhgr-4m5f"],"url":"https://o3.security/vulnerability/CVE-2026-77360","summary":"oRPC: Vary Header Injection in CORS Plugin leading to potential Cache/CORS Bypass","details":"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.","published":"2026-09-16T18:42:45.816Z","modified":"2026-09-18T03:48:31.253522344Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"@orpc/server","fixedVersion":"1.14.8"}],"fix":{"url":"https://github.com/middleapi/orpc/commit/daabded122a89d323357c4c401e879701864cb2f","label":"middleapi/orpc@daabded"},"references":[{"type":"WEB","url":"https://github.com/middleapi/orpc/releases/tag/v1.14.8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77360.json"},{"type":"ADVISORY","url":"https://github.com/middleapi/orpc/security/advisories/GHSA-j9v4-rhgr-4m5f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77360"},{"type":"REPORT","url":"https://github.com/middleapi/orpc/issues/1661"},{"type":"FIX","url":"https://github.com/middleapi/orpc/commit/daabded122a89d323357c4c401e879701864cb2f"},{"type":"FIX","url":"https://github.com/middleapi/orpc/pull/1662"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-18T03:48:31.253522344Z"}}