CVE-2026-36045 picoclaw is vulnerable to OS command injection via the ExecTool component
An attacker can execute arbitrary OS commands via the ExecTool component due to an incomplete command denylist in this Go library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-36045?
CVE-2026-36045 is a high-severity command injection vulnerability in n/a, published on 27 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
picoclaw <=v0.1.2 and earlier is vulnerable to OS command injection via the ExecTool component (pkg/tools/shell.go). The guardCommand() function attempts to restrict shell command execution using a denylist of 8 regular expressions, but the denylist is incomplete.
Weakness: CWE-78
Which versions are affected by CVE-2026-36045?
3 open source packages ship an affected version, including github.com/sipeed/picoclaw.
| Package | Affected | Fixed in |
|---|---|---|
github.com/sipeed/picoclaw Go | All versions | None |
github.com/sipeed/picoclaw Go | All versions to 0.1.2 | None |
github.com/sipeed/picoclaw Go | All versions to 0.1.2 | None |
How do I fix CVE-2026-36045?
Upgrade to a fixed version.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-36045 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-36045 exists.
Sources
Also known as GHSA-cv2p-68f4-f4pw, GO-2026-5867.