CVE-2026-10219 nextlevelbuilder GoClaw write_file Tool fsbridge.go FsBridge.WriteFile os command injection
Remote attackers can execute arbitrary OS commands via the write_file tool in GoClaw, requiring a patch to mitigate the risk.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-10219?
CVE-2026-10219 is a medium-severity command injection vulnerability in nextlevelbuilder GoClaw, published on 1 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in nextlevelbuilder GoClaw up to 3.11.3. This impacts the function FsBridge.WriteFile of the file internal/sandbox/fsbridge.go of the component write_file Tool. Performing a manipulation results in os command injection. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The pull request to fix this issue awaits acceptance.
Which versions are affected by CVE-2026-10219?
3 open source packages ship an affected version, including github.com/nextlevelbuilder/goclaw.
| Package | Affected | Fixed in |
|---|---|---|
github.com/nextlevelbuilder/goclaw Go | All versions | None |
github.com/nextlevelbuilder/goclaw Go | All versions to 3.11.3 | None |
github.com/nextlevelbuilder/goclaw Go | All versions to 3.11.3 | None |
How do I fix CVE-2026-10219?
Apply the vendor's patch.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-10219 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10219 exists.
Sources
Also known as GHSA-6jm8-4fhr-5w64, GO-2026-5951.