CVE-2026-0757 MCP Manager for Claude Desktop execute-command Command Injection Sandbox Escape Vulnerability
Remote attackers can escape the sandbox and execute arbitrary code via command injection in MCP Manager for Claude Desktop.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-0757?
CVE-2026-0757 is a high-severity command injection vulnerability in MCP Manager for Claude Desktop, published on 23 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
MCP Manager for Claude Desktop execute-command Command Injection Sandbox Escape Vulnerability. This vulnerability allows remote attackers to bypass the sandbox on affected installations of MCP Manager for Claude Desktop. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the processing of MCP config objects. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to escape the sandbox and execute arbitrary code in the context of the current process at medium integrity. Was ZDI-CAN-27810.
Weakness: CWE-78
Which versions are affected by CVE-2026-0757?
How do I fix CVE-2026-0757?
No fix has been published for CVE-2026-0757 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-0757 being exploited?
There is no known exploitation of CVE-2026-0757 in the wild and no public exploit code.
Sources
Also known as GHSA-fm26-rhvj-jjw8.