Vulnerability · Published May 14, 2026 · Assigned by VulnCheck
CVE-2026-8621Crabbox < v0.12.0 Authentication Bypass via Header Spoofing
High 8.8
In plain English
A high-severity improper authentication in crabbox from openclaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Crabbox prior to v0.12.0 contains an authentication bypass vulnerability that allows non-admin shared-token callers to impersonate other owners or organizations by spoofing identity headers. Attackers can inject malicious X-Crabbox-Owner and X-Crabbox-Org headers in requests authenticated with a shared token to bypass authorization checks and access owner/org-scoped lease operations belonging to victim accounts.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/openclaw/crabbox | 0.12.0 | GHSA-4g9m-rffv-h6wq |
| Go | github.com/openclaw/crabbox | 0.12.0 | GO-2026-5120 |
Affected products (as reported)
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/openclaw/crabbox/releases/tag/v0.12.0 release-notes
- https://github.com/openclaw/crabbox/pull/70 issue-tracking
- https://github.com/openclaw/crabbox/commit/b657323f1d1c954cefc8444571fa6c45a8896e7f patch
- https://www.vulncheck.com/advisories/crabbox-authentication-bypass-via-header-spoofing third-party-advisory