{"id":"CVE-2026-48819","revision":"f3b7d71b36bd45c0ab115bec50db23c6","records":[{"revision":"f3b7d71b36bd45c0ab115bec50db23c6","observedAt":"2026-10-25T12:17:32.273+00:00","statement":{"source":"nvd","id":"CVE-2026-48819","aliases":[],"title":"Hey API is an ecosystem for turning API specifications into production-ready code. Prior to 0.97.3, dist/clients/core/params.ts ships a runtime template copied into generated SDKs as params.gen.ts, and buildClientParams writes unknown slot-…","description":"Hey API is an ecosystem for turning API specifications into production-ready code. Prior to 0.97.3, dist/clients/core/params.ts ships a runtime template copied into generated SDKs as params.gen.ts, and buildClientParams writes unknown slot-prefixed keys such as $body_, $headers_, $path_, and $query_ directly to the corresponding slot, allowing $query___proto__ alongside a legitimate q field to set params.query through params[\"query\"][\"__proto__\"] = value, call Object.setPrototypeOf(params.query, value), and expose inherited attacker-controlled keys during for..in iteration. This issue is fixed in version 0.97.3.","state":0,"publishedAt":"2026-07-17T20:17:21.553+00:00","modifiedAt":"2026-10-24T20:10:00.137+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","score":4.8,"severity":"MEDIUM"}],"references":["https://github.com/hey-api/hey-api/commit/023909137a15eff9c0263d3bcd116140076b214f","https://github.com/hey-api/hey-api/commit/da321a1529eb3c90d2109da870f514b915a60169","https://github.com/hey-api/hey-api/releases/tag/%40hey-api%2Fopenapi-ts%400.97.3","https://github.com/hey-api/hey-api/security/advisories/GHSA-hhx9-57xq-r5rw"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-48819","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-1321"],"productCriteria":[],"sourceDates":{"published":"2026-07-17T20:17:21.553","lastModified":"2026-10-24T20:10:00.137"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-48819","identifiers":["CVE-2026-48819"]},"retained":false,"historicalAffected":[]}],"coverage":[]}