CVE-2026-10279 hiraishikentaro wezterm-mcp switch_pane/write_to_specific_pane wezterm_executor.ts os command injection
Remote attackers can execute arbitrary OS commands via the pane_id argument in the wezterm-mcp plugin, requiring immediate attention from users.
- 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-2026-10279?
CVE-2026-10279 is a medium-severity command injection vulnerability in hiraishikentaro wezterm-mcp, published on 1 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in hiraishikentaro wezterm-mcp 0.1.0. The affected element is an unknown function of the file src/wezterm_executor.ts of the component switch_pane/write_to_specific_pane. The manipulation of the argument request.params.arguments.pane_id leads to os command injection. The attack can be initiated remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-10279?
How do I fix CVE-2026-10279?
No fix has been published for CVE-2026-10279 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-2026-10279 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10279 exists.
Sources
Also known as GHSA-xrc9-g9fm-hq32.