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CVE-2023-25574— JupyterHub's LTI13Authenticator: JWT signature not validated

Quick assessment

Affected
jupyterhub ltiauthenticator
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

CVSS 10.0 · Critical EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
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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Qwen3.6-35B-A3B · 8737 chars
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III. Intelligence Information for CVE-2023-25574

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Patches & Fixes for CVE-2023-25574 (2)

Vendor Advisories for CVE-2023-25574 (1)

IV. Related Vulnerabilities

Same product: ltiauthenticator
Same vendor: jupyterhub
Same weakness: CWE-347

V. Comments for CVE-2023-25574

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