{"cve":"CVE-2026-103918","nvd":{"published":"2026-10-02T20:17:00.067","modified":"2026-10-06T15:18:12.170","status":"Deferred","description":"oRPC is a tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to 1.14.10, the @orpc/zod ZodSmartCoercionPlugin and experimental_ZodSmartCoercionPlugin collect object and record properties in plain objects and resolve shape keys through the prototype chain. A remote client that can reach a procedure with an object or record input can supply __proto__ to replace the prototype of the returned request object, allowing attacker-controlled inherited values to reach application lookups. For object schemas, keys such as constructor, toString, and __proto__ can instead resolve inherited members as Zod schemas and cause an unhandled TypeError before validation. The global Object.prototype, unrelated objects, other requests, and other users are not modified, and the availability effect is limited to crafted requests rather than persistent process-wide state. This issue is fixed in version 1.14.10.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-915","CWE-1321"],"references":["https://github.com/middleapi/orpc/commit/26314dfb443237c495116c5794d3d30a7a22c570","https://github.com/middleapi/orpc/pull/1727","https://github.com/middleapi/orpc/releases/tag/v1.14.10","https://github.com/middleapi/orpc/security/advisories/GHSA-gcgf-fh7c-8gf2"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-103918","score":0.00248,"percentile":0.15954,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-gcgf-fh7c-8gf2","url":"https://osv.dev/vulnerability/GHSA-gcgf-fh7c-8gf2","summary":"@orpc/zod: Prototype injection in smart coercion","modified":"2026-10-05T17:45:04.336870149Z","packages":[{"ecosystem":"npm","name":"@orpc/zod","purl":"pkg:npm/%40orpc/zod","ranges":["<1.14.10"],"fixed":["1.14.10"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}