CVE-2026-28794
CRITICAL
GHSA-m272-9rp6-32mc
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4Description
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.
Analysis
Prototype pollution in oRPC before 1.13.6. PoC and patch available.
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Remediation
Within 24 hours: Identify all systems and dependencies using @orpc/client versions prior to 1.13.6 and isolate affected applications from production if not yet patched. Within 7 days: Apply vendor patch to version 1.13.6 or later across all affected systems and validate through testing. …
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External POC / Exploit Code
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