CVE-2026-45773
Turborepo: Login callback CSRF/session fixation
- State
- Published
- Severity
- 5.1 Medium
- Published
- May 15, 2026
- Updated
- May 15, 2026
- Reserved
- May 13, 2026
Description
Turborepo is a high-performance build system for JavaScript and TypeScript codebases. Prior to 2.9.14, Turborepo's self-hosted login and SSO browser flows did not validate a CSRF state value on the localhost callback. While the CLI was waiting for authentication, a malicious web page could send a request to the local callback server with an attacker-controlled token. If accepted before the legitimate callback, the CLI could complete login with the wrong credentials. This affects users authenticating the turbo CLI against self-hosted remote cache/auth endpoints. Vercel-hosted login flows using device authorization are not affected. This vulnerability is fixed in 2.9.14.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:H/SA:N | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
turborepovercel |
|
References
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