CVE-2025-61669— jupyter_server next parameter open redirect can redirect users to external domains
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I. Basic Information for CVE-2025-61669
Vulnerability Information
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Vulnerability Title
jupyter_server next parameter open redirect can redirect users to external domains
Source: NVD (National Vulnerability Database)
Vulnerability Description
Jupyter Server is the backend for Jupyter web applications. In jupyter_server versions through 2.17.0, the next query parameter in the login flow is insufficiently validated in `LoginFormHandler._redirect_safe()`, which allows redirects to arbitrary external domains via values such as `///example.com`. An attacker can use a crafted login URL to redirect users to a malicious site and facilitate phishing attacks. This issue is fixed in version 2.18.0.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Jupyter Server 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jupyter Server是Jupyter组织的一款用于为Jupyter Web应用提供后端服务的应用软件。 Jupyter Server 2.17.0及之前版本存在输入验证错误漏洞，该漏洞源于登录流程中next查询参数验证不足，可能导致重定向到任意外部域，攻击者可通过特制登录URL将用户重定向到恶意站点并促进钓鱼攻击。
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 |
|---|---|---|---|---|
| jupyter-server | jupyter_server | <= 2.17.0 | - |
II. Public POCs for CVE-2025-61669
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · jupyter-server · 2026-05-05 · 4 CVEs total
| CVE-2026-35397 | jupyter-server path traversal allows access to sibling directories sharing root_dir name p | |
| CVE-2026-40110 | jupyter-server CORS origin validation bypass via unanchored regex in allow_origin_pat | |
| CVE-2026-40934 | jupyter-server authentication cookies remain valid after password reset due to static cook |
IV. Related Vulnerabilities
Same product: jupyter_server
- CVE-2026-40934
jupyter-server authentication cookies remain valid after pas - CVE-2026-40110
jupyter-server CORS origin validation bypass via unanchored - CVE-2026-35397
jupyter-server path traversal allows access to sibling direc - CVE-2024-35178
Jupyter server on Windows discloses Windows user password ha - CVE-2023-49080
Jupyter Server errors include tracebacks with path informati
Same vendor: jupyter-server
- CVE-2026-40934
jupyter-server authentication cookies remain valid after pas - CVE-2026-40110
jupyter-server CORS origin validation bypass via unanchored - CVE-2026-35397
jupyter-server path traversal allows access to sibling direc - CVE-2024-35178
Jupyter server on Windows discloses Windows user password ha - CVE-2024-28188
jupyter-scheduler's endpoint is missing authentication
Same weakness: CWE-601
- CVE-2026-42350
Kargo: Open Redirect in UI OIDC Login Flow via redirectTo Qu - CVE-2026-42195
Unvalidated gitlab URL parameter redirects OAuth authorize s - CVE-2026-3318
Multiple vulnerabilities in Cradle e-commerce - CVE-2026-42259
Saltcorn: Open Redirect in `POST /auth/login` due to incompl - CVE-2026-6795
Open Redirect in DivvyDrive Information Technologies' DivvyD
V. Comments for CVE-2025-61669
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