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CVE-2023-37266— Weak json web token (JWT) secrets in CasaOS

Quick assessment

Affected
IceWhaleTech CasaOS
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.

CasaOS是一个简单、易用、优雅的开源家庭云系统。 CasaOS 0.4.4之前版本存在授权问题漏洞。攻击者利用该漏洞可以制作任意JWT和访问通常需要身份验证的功能，并以root身份执行任意命令。

CVSS 9.8 · Critical EPSS 6.84% · P94

Public Exploits 1

Nuclei · 1 CVE-2023-37266.yaml [template]

Possible ATT&CK Techniques 1 AI

T1078.001 · Default Accounts
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I. Basic Information for CVE-2023-37266

Vulnerability Information
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Vulnerability Title
Weak json web token (JWT) secrets in CasaOS
Source: CVE Program / CVE List V5
Vulnerability Description
CasaOS is an open-source Personal Cloud system. Unauthenticated attackers can craft arbitrary JWTs and access features that usually require authentication and execute arbitrary commands as `root` on CasaOS instances. This problem was addressed by improving the validation of JWTs in commit `705bf1f`. This patch is part of CasaOS 0.4.4. Users should upgrade to CasaOS 0.4.4. If they can't, they should temporarily restrict access to CasaOS to untrusted users, for instance by not exposing it publicly.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
CasaOS 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CasaOS是一个简单、易用、优雅的开源家庭云系统。 CasaOS 0.4.4之前版本存在授权问题漏洞。攻击者利用该漏洞可以制作任意JWT和访问通常需要身份验证的功能，并以root身份执行任意命令。
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
IceWhaleTech CasaOS < 0.4.4 -

II. Public POCs for CVE-2023-37266

# POC Description Source Link Shenlong Link
1 CasaOS is an open-source Personal Cloud system. Unauthenticated attackers can craft arbitrary JWTs and access features that usually require authentication and execute arbitrary commands as `root` on CasaOS instances. This problem was addressed by improving the validation of JWTs in commit `705bf1f`. This patch is part of CasaOS 0.4.4. Users should upgrade to CasaOS 0.4.4. If they can't, they should temporarily restrict access to CasaOS to untrusted users, for instance by not exposing it publicly. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-37266.yaml POC Details
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Qwen3.6-35B-A3B · 6570 chars
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III. Intelligence Information for CVE-2023-37266

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Vendor Advisories for CVE-2023-37266 (1)

Security Blog Posts for CVE-2023-37266 (1)

IV. Related Vulnerabilities

Same product: CasaOS
Same vendor: IceWhaleTech
Same weakness: CWE-287

V. Comments for CVE-2023-37266

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