CVE-2026-28794 — oRPC: Prototype Pollution in `@orpc/client` via `StandardRPCJsonSerializer` Deserialization
oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to version 1.13.6, a prototype pollution vulnerability exists in the R…
Published: 2026-03-06 · CVSS: 9.3 · CVSS 4.0
oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to version 1.13.6, a prototype pollution vulnerability exists in the RPC JSON deserializer of the @orpc/client package. The vulnerability allows unauthenticated, remote attackers to inject arbitrary properties into the global Object.prototype. Because this pollution persists for the lifetime of the Node.js process and affects all objects, it can lead to severe security breaches, including authentication bypass, denial of service, and potentially Remote Code Execution. This issue has been patched in version 1.13.6.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7