CVE-2026-7443 BurtTheCoder mcp-dnstwist MCP index.ts fuzz_domain os command injection
Remote attackers can execute arbitrary OS commands via the fuzz_domain function in the mcp-dnstwist library, requiring immediate attention from users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-7443?
CVE-2026-7443 is a medium-severity command injection vulnerability in BurtTheCoder mcp-dnstwist, published on 29 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A weakness has been identified in BurtTheCoder mcp-dnstwist up to 1.0.4. Affected by this vulnerability is the function fuzz_domain of the file src/index.ts of the component MCP Interface. Executing a manipulation of the argument Request can lead to os command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-7443?
How do I fix CVE-2026-7443?
No fix has been published for CVE-2026-7443 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-2026-7443 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7443 exists.
Sources
Also known as GHSA-m7hc-392f-p2fg.