Description (CNA)
NullHub through 2026.5.29 contains a missing authentication vulnerability that allows unauthenticated attackers to access the /api/* management API because the auth_token field defaults to null and is never assigned. Attackers sending requests without Authorization or Origin headers to non-loopback listeners can control agent instances, rewrite configurations including provider credentials, and manage cron jobs and MCP servers.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| nullclaw / NullHub | affected 0 through 2026.5.29 |
CWE
CWE-306
References
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izg
- https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/server.zig#L546-L556
- https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/api/settings.zig#L29-L54
- https://github.com/nullclaw/nullhub/blob/v2026.5.29/Dockerfile#L69-L71
- https://github.com/nullclaw/nullhub
- https://www.vulncheck.com/advisories/nullhub-through-2026.5.29-missing-authentication-for-api-management-api
ADP enrichment
No English description supplied.