CVE-2026-110616
highNullHub through 2026.5.29 contains a missing authentication vulnerability that allows unauthenticated attackers to access the /api/* management API because the…
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:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/nullclaw/nullhub disclosure@vulncheck.com
- https://github.com/nullclaw/nullhub/blob/v2026.5.29/Dockerfile#L69-L71 disclosure@vulncheck.com
- https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/api/settings.zig#L29-L54 disclosure@vulncheck.com
- https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/server.zig#L546-L556 disclosure@vulncheck.com
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izg disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/nullhub-through-2026.5.29-missing-authentication-for-... disclosure@vulncheck.com
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izg 134c704f-9b21-4f2e-91b3-4a467353bcc0