CVE-2026-110616
CVE-2026-110616 · NullHub through 2026.5.29 Missing Authentication for /api Management API
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 9.2 · Critical · EPSS 0.8%
- Published
- Updated
Affected products and versions
nullhub
- Versions
- ≥ 0, ≤ 2026.5.29: Affected (custom)
No fix published
Original sources
- 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
- https://nvd.nist.gov/vuln/detail/CVE-2026-110616