CVE-2026-110616

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/nullclaw/nullhub
https://github.com/nullclaw/nullhub/blob/v2026.5.29/Dockerfile#L69-L71
https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/api/settings.zig#L29-L54
https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/server.zig#L546-L556
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izg
https://www.vulncheck.com/advisories/nullhub-through-2026.5.29-missing-authentication-for-api-management-api
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izg

Configurations

No configuration.

History

20 Oct 2026, 02:17

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izg -~~	() https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izg -

14 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 15:17

Updated : 2026-10-20 02:17

NVD link : CVE-2026-110616

Mitre link : CVE-2026-110616

CVE.ORG link : CVE-2026-110616

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

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