CVE-2023-25574— JupyterHub's LTI13Authenticator: JWT signature not validated
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I. Basic Information for CVE-2023-25574
Vulnerability Information
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Vulnerability Title
JupyterHub's LTI13Authenticator: JWT signature not validated
Source: NVD (National Vulnerability Database)
Vulnerability Description
`jupyterhub-ltiauthenticator` is a JupyterHub authenticator for learning tools interoperability (LTI). LTI13Authenticator that was introduced in `jupyterhub-ltiauthenticator` 1.3.0 wasn't validating JWT signatures. This is believed to allow the LTI13Authenticator to authorize a forged request. Only users that has configured a JupyterHub installation to use the authenticator class `LTI13Authenticator` are affected. `jupyterhub-ltiauthenticator` version 1.4.0 removes LTI13Authenticator to address the issue. No known workarounds are available.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
密码学签名的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
JupyterHub 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JupyterHub是JupyterHub开源的一款用于Jupyter的多用户服务器。 JupyterHub 1.3.0版本存在数据伪造问题漏洞，该漏洞源于LTI13Authenticator未验证JWT签名，可能导致伪造请求被授权。
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)
Shenlong Deep Dive — AI Deep Analysis
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| jupyterhub | ltiauthenticator | = 1.3.0 | - |
II. Public POCs for CVE-2023-25574
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same vendor: jupyterhub
- CVE-2026-34052
LTI JupyterHub Authenticator: Unbounded Memory Growth via No - CVE-2026-33709
JupyterHub has an Open Redirect Vulnerability - CVE-2026-33175
OAuthenticator: Authentication Bypass in Auth0OAuthenticator - CVE-2025-32428
Jupyter Remote Desktop Proxy makes TigerVNC accessible via t - CVE-2024-41942
JupyterHub has a privilege escalation vulnerability with the
Same weakness: CWE-347
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Plunk: SNS webhook forgery - CVE-2026-44497
ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type - CVE-2026-41669
Admidio: SAML Signature Validation Result Ignored — Forged A - CVE-2026-7689
Dolibarr ERP CRM Online Signature security.lib.php dol_verif - CVE-2026-33467
Improper Verification of Cryptographic Signature in Elastic
V. Comments for CVE-2023-25574
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