Vulnerability DatabaseCVE-2026-110616
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CVE-2026-110616
Published:October 14, 2026
Updated:October 15, 2026
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.
Related Resources (8)
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/server.zig#L546-L556
https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/api/settings.zig#L29-L54
https://nvd.nist.gov/vuln/detail/CVE-2026-110616
https://www.vulncheck.com/advisories/nullhub-through-2026.5.29-missing-authentication-for-api-management-api
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110616.json
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izg
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CVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Missing Authentication for Critical Function
CWE-306
EPSS
Base Score:
0.81