CVE-2026-110616: critical vulnerability in nullclaw NullHub
NullHub through 2026.5.29 Missing Authentication for /api Management API
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.2epss 1.0%
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:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
nullclaw · NullHubReferences
https://github.com/nullclaw/nullhubhttps://github.com/nullclaw/nullhub/blob/v2026.5.29/Dockerfile#L69-L71https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/api/settings.zig#L29-L54https://github.com/nullclaw/nullhub/blob/v2026.5.29/src/server.zig#L546-L556https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJrLma3izghttps://www.vulncheck.com/advisories/nullhub-through-2026.5.29-missing-authentication-for-api-management-api