---
id: CVE-2026-45223
title: Crabbox < 0.9.0 Authentication Bypass via Admin Claim Injection
summary: >-
  Crabbox before 0.9.0 contains an authentication bypass vulnerability in the
  coordinator user-token verification path where the verifyUserToken() function
  fails to reject payloads containing an admin claim, allowing attackers to
  escalate …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-290
vendor: openclaw
product: crabbox
affected:
  - crabbox < 0.9.0
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-05-11T18:35:17.042648Z'
exploitAvailable: true
published: '2026-05-11'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T14:03:37.629Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-45223'
references:
  - url: 'https://github.com/openclaw/crabbox/releases/tag/v0.9.0'
    label: crabbox 0.9.0 Release Notes
  - url: 'https://github.com/openclaw/crabbox/pull/64'
  - url: >-
      https://github.com/openclaw/crabbox/commit/46079f6de7f10cf61bc47efebd0c143a41664898
  - url: >-
      https://www.vulncheck.com/advisories/crabbox-authentication-bypass-via-admin-claim-injection
tags:
  - cve.org
  - exploit-available
epss: 0.00382
epssPercentile: 0.32457
ingestedAt: '2026-11-08T14:51:22.425Z'
---

## Overview

Crabbox before 0.9.0 contains an authentication bypass vulnerability in the coordinator user-token verification path where the verifyUserToken() function fails to reject payloads containing an admin claim, allowing attackers to escalate privileges. An attacker with access to the shared non-admin token can craft a user-token payload with admin: true, sign it using HMAC-SHA256, and present it to admin-only coordinator routes to gain full coordinator admin access including lease visibility, pool state management, and forced release operations.

## Affected

- `crabbox < 0.9.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.