CVE-2026-94031 0-Gaurav-0 nexus-mcp nexus_reauth MCP tool browser.ts child_process.exec command injection
Remote attackers can execute arbitrary commands via the nexus_reauth MCP tool due to unsanitized input in child_process.exec.
- 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-2026-94031?
CVE-2026-94031 is a medium-severity command injection vulnerability in 0-Gaurav-0 nexus-mcp, published on 20 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in 0-Gaurav-0 nexus-mcp aed0026e7ac1f23dc940e46e9fd3a2da6904f914. Affected by this issue is the function child_process.exec of the file src/auth/browser.ts of the component nexus_reauth MCP tool. The manipulation of the argument url results in command injection. The attack may be performed from remote. The exploit is now public and may be used. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-94031?
How do I fix CVE-2026-94031?
No fix has been published for CVE-2026-94031 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-2026-94031 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-94031 exists.
Sources
Also known as GHSA-c2f2-x95m-p9vw.