CVE-2026-117573：hagent 透過 commit 761eec6 發現 Arduino 與 ESP32 MCP 工具中的 OS 指令注入漏洞

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.

Impact

Affected Products

The following products are affected by CVE-2026-117573 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

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Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-117573.

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-117573 is associated with the following CWEs:

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We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

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The following list is the news that have been mention CVE-2026-117573 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-117573 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

• New CVE Received by [email protected]

  十月. 27, 2026

  Action	Type	Old Value	New Value
  Added	Description		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.
  Added	CVSS V4.0		AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  Added	CVSS V3.1		AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  Added	CWE		CWE-78
  Added	Affected		New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/117xxx/CVE-2026-117573.json">CVE-2026-117573</a>
  Added	Reference		https://github.com/masc-ucsc/hagent
  Added	Reference		https://github.com/masc-ucsc/hagent/blob/761eec627a1e6fb128a2a8ce9245aa595cc2f7af/hagent/mcp/mcp_arduino.py#L776
  Added	Reference		https://github.com/masc-ucsc/hagent/blob/761eec627a1e6fb128a2a8ce9245aa595cc2f7af/hagent/mcp/mcp_esp32.py#L682
  Added	Reference		https://github.com/masc-ucsc/hagent/issues/98
  Added	Reference		https://www.vulncheck.com/advisories/hagent-through-commit-761eec6-os-command-injection-via-arduino-and-esp32-mcp-tools

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.