CVE-2026-117573
High · 7.8CVSS
7.8
EPSS
0.7%
Published
Oct 27, 2026
CISA due date
—
The record
hagent through commit 761eec6 contains an OS command injection vulnerability that allows MCP clients to execute shell commands by injecting metacharacters into the args parameter of the hagent_arduino and hagent_esp32 tools. Attackers or prompt-injected agents can supply crafted args interpolated into arduino-cli and idf.py commands run with subprocess.run(shell=True) to execute commands as the MCP server user.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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