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Description

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.

PUBLISHED Reserved 2026-03-03 | Published 2026-03-06 | Updated 2026-03-06 | Assigner GitHub_M




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N

Problem types

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Product status

< 1.13.6
affected

References

github.com/...i/orpc/security/advisories/GHSA-m272-9rp6-32mc

github.com/...ommit/1dba06fc6f938c2486de303c2fa096bc1c8418b5

cve.org (CVE-2026-28794)

nvd.nist.gov (CVE-2026-28794)

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