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HIGH · 7.8

CVE-2026-12537

Improper Neutralization used in an OS Command in the container launcher in Google Gemini CLI (versions prior to 0.39.1) and run-gemini-cli GitHub Action (versions prior to 0.1.22) on headless CI platf...

Vulnerability Description

Improper Neutralization used in an OS Command in the container launcher in Google Gemini CLI (versions prior to 0.39.1) and run-gemini-cli GitHub Action (versions prior to 0.1.22) on headless CI platforms allows an unprivileged attacker to achieve pre-sandbox host-level code execution a maliciously crafted .gemini/.env file.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
GoogleGemini-Cli< 0.39.1
GoogleRun-Gemini-Cli< 0.1.22

Related Weaknesses (CWE)

CWE-20CWE-78

References

FAQ

What is CVE-2026-12537?

CVE-2026-12537 is a vulnerability with a CVSS score of 7.8 (HIGH). Improper Neutralization used in an OS Command in the container launcher in Google Gemini CLI (versions prior to 0.39.1) and run-gemini-cli GitHub Action (versions prior to 0.1.22) on headless CI platf...

How severe is CVE-2026-12537?

CVE-2026-12537 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-12537?

Check the references section above for vendor advisories and patch information. Affected products include: Google Gemini-Cli, Google Run-Gemini-Cli.