CVE-2026-16121 nextlevelbuilder GoClaw exec_approval.go isSafeBin improper authorization
Remote attackers can bypass authorization checks in GoClaw's exec_approval module to execute arbitrary commands, requiring an upgrade to mitigate.
- 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-2026-16121?
CVE-2026-16121 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 vulnerability was identified in nextlevelbuilder GoClaw up to 3.13.2. Affected is the function isSafeBin of the file internal/tools/exec_approval.go. The manipulation leads to improper authorization. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-16121?
How do I fix CVE-2026-16121?
No fix has been published for CVE-2026-16121 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-2026-16121 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16121 exists.
Sources
Also known as GHSA-952r-63wr-g75f.