CVE-2026-16123 nextlevelbuilder GoClaw Invoke Endpoint tools_invoke.go ToolsInvokeHandler.ServeHTTP authorization
Remote attackers can bypass authorization on the Invoke Endpoint to execute tools, potentially leading to privilege escalation or code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-16123?
CVE-2026-16123 is a medium-severity missing authorization vulnerability in nextlevelbuilder GoClaw, published on 18 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A weakness has been identified in nextlevelbuilder GoClaw up to 3.13.2. Affected by this issue is the function ToolsInvokeHandler.ServeHTTP of the file internal/http/tools_invoke.go of the component Invoke Endpoint. This manipulation causes missing authorization. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
Which versions are affected by CVE-2026-16123?
How do I fix CVE-2026-16123?
No fix has been published for CVE-2026-16123 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-16123 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16123 exists.
Sources
Also known as GHSA-64vj-9h4v-597g.