gemini-mcp-tool execAsync Command Injection Remote Code Execution Vulnerability

published 2026-01-23 9 mo ago modified 2026-06-18 4 mo ago also GHSA-4h5r-5jm8-jxjm , EUVD-2026-4492

cvss: 9.8; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 3.4%; EPSS 3.4% chance of exploitation in 30 days, percentile 88%
public exploits: 0; none known

gemini-mcp-tool execAsync Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of gemini-mcp-tool. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the implementation of the execAsync method. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-27783.

Patch / fix

fixed in 1

npm gemini-mcp-tool 1.1.6

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 9 mo ago (2026-01-23)

Exploit prediction

3.42% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	gemini-mcp-tool	>=1.1.2, <1.1.6	1.1.6

Affected products

Gemini MCP Tool gemini-mcp-tool

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

CVE List CVE-2026-0755
GitHub Advisory GHSA-4h5r-5jm8-jxjm
NVD CVE-2026-0755

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary