[ CVE-2026-110616 · Published 14 Oct 2026 ]
Vulnerability in nullclaw NullHub
CVSS 8.1
EPSS <1%No fix listed yet
[ Why it matters ]Priority signals
- Public proof-of-concept exploit exists (CISA SSVC)
[ Description ]Official description
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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.
[ References ]References
- github.com/nullclaw/nullhub
- github.com/nullclaw/nullhub/blob/v2026.5.29/Dockerfile
- github.com/nullclaw/nullhub/blob/v2026.5.29/src/api/settings.zig
- github.com/nullclaw/nullhub/blob/v2026.5.29/src/server.zig
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izg
- www.vulncheck.com/advisories/nullhub-through-2026.5.29-missing-authentication-for-api-m…