GitHub Advisoryadvisory · npm

GHSA-4h5r-5jm8-jxjm gemini-mcp-tool vulnerable to OS command injection and @file exfiltration via prompt quoting (CVE-2026-0755)

CRITICAL Published 2026-06-18 Modified 2026-06-18 Official page ↗
Aliases
CVE-2026-0755
Ecosystem
npm
Packages
gemini-mcp-tool
Severity
Critical
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-78
Reviewed
2026-06-18

Affected packages

• npm gemini-mcp-tool: >= 1.1.2, < 1.1.6 → fixed in 1.1.6

Description

Untrusted prompt input could reach the Gemini CLI @file parser, allowing read/exfiltration of arbitrary local files (@/etc/passwd, @~/.ssh/id_rsa, @../../secret). On Windows, unquoted cmd.exe metacharacters could break out into OS command injection. Fix (1.1.6): removed the broken shell:false double-quote wrapping; added assertSafeFileReferences() to contain @file refs to the working directory; hardened Windows cmd.exe argument quoting.

Related

Alias · CVE (1)

  • CVE-2026-0755 gemini-mcp-tool execAsync Command Injection Remote Code Execution Vulnerability. vulnerability

Weakness · CWE (1)

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

References