Vulnerability in Openclaw Crabbox
CVE-2026-45223
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Openclaw Crabbox — versions 0, 46079f6de7f10cf61bc47efebd0c143a41664898
Weakness classification (CWE)
References
- github.com/openclaw/crabbox/releases/tag/v0.9.0 (release-notes)
- github.com/openclaw/crabbox/pull/64 (issue-tracking)
- github.com/openclaw/crabbox/commit/46079f6de7f10cf61bc47efebd0c143a41664898 (patch)
- www.vulncheck.com/advisories/crabbox-authentication-bypass-via-admin-claim-inje… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-45223?
- CVE-2026-45223 is a high-severity vulnerability in Openclaw Crabbox, classified under Authentication Bypass by Spoofing. CVSS score: 8.8/10. Published 2026-05-11.
- How severe is CVE-2026-45223?
- High severity. CVSS v3 base score is 8.8 out of 10.