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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 4.0
- 7.7 HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.38% probability · 32th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-290
- Source
- disclosure@vulncheck.com
References
- https://github.com/openclaw/crabbox/commit/46079f6de7f10cf61bc47efebd0c143a41664898
- https://github.com/openclaw/crabbox/pull/64
- https://github.com/openclaw/crabbox/releases/tag/v0.9.0
- https://www.vulncheck.com/advisories/crabbox-authentication-bypass-via-admin-claim-injection
- https://github.com/openclaw/crabbox/pull/64
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.