CVE-2026-110616
NullHub through 2026.5.29 Missing Authentication for /api Management API
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-306 |
| Vendor | nullclaw |
| Product | nullhub |
| Published | Oct 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
nullclaw / NullHub
0 ≤ 2026.5.29
References
hackmd.io: https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izg github.com: https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/server.zig#L546-L556 github.com: https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/api/settings.zig#L29-L54 github.com: https://github.com/nullclaw/nullhub/blob/v2026.5.29/Dockerfile#L69-L71 github.com: https://github.com/nullclaw/nullhub vulncheck.com: https://www.vulncheck.com/advisories/nullhub-through-2026.5.29-missing-authentication-for-api-management-api
Credits
hieuPenguinnn