CVE-2026-19039 Kino-Kafkaesque ssh-mcp-server SSH index.ts ssh_exec command injection
Local attackers can inject commands via SSH arguments in ssh-mcp-server, though maintainers argue the tool is intended for trusted local use.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19039?
CVE-2026-19039 is a medium-severity command injection vulnerability in Kino-Kafkaesque ssh-mcp-server, published on 6 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was detected in Kino-Kafkaesque ssh-mcp-server up to 8ebbbb99b26f80ff6162fe00957c6dec73fbc5a5. Impacted is the function ssh_exec of the file src/index.ts of the component SSH Command Handler. Performing a manipulation of the argument host/username results in command injection. The attack requires a local approach. The actual existence of this vulnerability is currently in question. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The project maintainer explains: "The intended threat model is that this MCP server is a local/trusted tool for an agent to execute commands over SSH, so callers already have meaningful execution capability through the exposed shell."
Which versions are affected by CVE-2026-19039?
How do I fix CVE-2026-19039?
No fix has been published for CVE-2026-19039 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-2026-19039 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19039 exists.
Sources
Also known as GHSA-26qx-2c8w-xjfx.