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CVE-2026-45773— Turborepo: Login callback CSRF/session fixation

Quick assessment

Affected
vercel turborepo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Turborepo是Vercel开源的一款高性能JavaScript和TypeScript构建系统。 Turborepo 2.9.14之前版本存在跨站请求伪造漏洞，该漏洞源于自托管登录和SSO浏览器流程未验证localhost回调上的CSRF状态值，可能导致恶意网页在CLI等待认证时发送攻击者控制的令牌，从而使用错误凭据完成登录。

AI Predicted 6.8 Difficulty: Easy EPSS 0.18% · P7

Affected Version Matrix 1

VendorProduct Version RangeStatus
vercel turborepo < 2.9.14 affected
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I. Basic Information for CVE-2026-45773

Vulnerability Information
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Vulnerability Title
Turborepo: Login callback CSRF/session fixation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Turborepo 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Turborepo是Vercel开源的一款高性能JavaScript和TypeScript构建系统。 Turborepo 2.9.14之前版本存在跨站请求伪造漏洞，该漏洞源于自托管登录和SSO浏览器流程未验证localhost回调上的CSRF状态值，可能导致恶意网页在CLI等待认证时发送攻击者控制的令牌，从而使用错误凭据完成登录。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
vercel turborepo < 2.9.14 -

II. Public POCs for CVE-2026-45773

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III. Intelligence Information for CVE-2026-45773

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Vendor Advisories for CVE-2026-45773 (1)

Same Patch Batch · vercel · 2026-05-15 · 3 CVEs total

CVE-2026-45772 Turborepo: Unexpected local code execution during Yarn Berry detection
CVE-2026-46508 Turborepo: VSCode Extension command injection

IV. Related Vulnerabilities

Same product: turborepo
Same vendor: vercel
Same weakness: CWE-352

V. Comments for CVE-2026-45773

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