CVE-2026-6942 radare2-mcp <=1.6.0 OS Command Injection via Shell Metacharacter Bypass
Remote attackers can execute arbitrary commands on the host via shell metacharacter injection in radare2-mcp without authentication.
- 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-2026-6942?
CVE-2026-6942 is a critical command injection vulnerability in radareorg radare2-mcp, published on 23 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
radare2-mcp version 1.6.0 and earlier contains an os command injection vulnerability that allows remote attackers to execute arbitrary commands by bypassing the command filter through shell metacharacters in user-controlled input passed to r2_cmd_str(). Attackers can inject shell metacharacters through the jsonrpc interface parameters to achieve remote code execution on the host running radare2-mcp without requiring authentication.
Weakness: CWE-78
Which versions are affected by CVE-2026-6942?
It affects 1 product.
Products include Radare Radare2 Mcp Server.
How do I fix CVE-2026-6942?
No fix has been published for CVE-2026-6942 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-2026-6942 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6942 exists.
Sources
Also known as GHSA-g65f-grqm-9jg5.