CVE-2025-68130

tRPC has possible prototype pollution in `experimental_nextAppDirCaller`

State: Published
Severity: 8.5 High
Published: Dec 16, 2025
Updated: Dec 16, 2025
Reserved: Dec 15, 2025

Description

tRPC allows users to build and consume fully typesafe APIs without schemas or code generation. Starting in version 10.27.0 and prior to versions 10.45.3 and 11.8.0, a A prototype pollution vulnerability exists in `@trpc/server`'s `formDataToObject` function, which is used by the Next.js App Router adapter. An attacker can pollute `Object.prototype` by submitting specially crafted FormData field names, potentially leading to authorization bypass, denial of service, or other security impacts. Note that this vulnerability is only present when using `experimental_caller` / `experimental_nextAppDirCaller`. Versions 10.45.3 and 11.8.0 fix the issue.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L	GitHub_M

Weaknesses

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

Affected Products

Product	Versions
trpctrpc	>= 10.27.0, < 10.45.3Affected >= 11.0.0, < 11.8.0Affected

References

https://github.com/trpc/trpc/security/advisories/GHSA-43p4-m455-4f4j

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