CVE-2023-37266

CRITICAL NUCLEI

Icewhale Casaos < 0.4.4 - Authentication Bypass

Title source: rule

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.

Nuclei Templates (1)

CasaOS < 0.4.4 - Authentication Bypass via Random JWT Token

CRITICALVERIFIEDby iamnoooob,DhiyaneshDK,pdresearch

Shodan: http.html:"/CasaOS-UI/public/index.html" || http.html:"/casaos-ui/public/index.html"

FOFA: body="/CasaOS-UI/public/index.html" || body="/casaos-ui/public/index.html"

References (3)

[Patch] https://github.com/IceWhaleTech/CasaOS/commit/705bf1facbffd2ca40b159b0303132b6fdf657ad

View Patch ZIP pw:eip

[Patch, Third Party Advisory] https://github.com/IceWhaleTech/CasaOS/security/advisories/GHSA-m5q5-8mfw-p2hr

[Exploit, Third Party Advisory] https://www.sonarsource.com/blog/security-vulnerabilities-in-casaos

Scores

CVSS v3 9.8

EPSS 0.8916

EPSS Percentile 99.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-287

Status published

Products (2)

icewhale/casaos < 0.4.4

IceWhaleTech/CasaOS 0 - 0.4.4Go

Published Jul 17, 2023

Tracked Since Feb 18, 2026