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CVE-2026-12537

CRITICAL
10.0
CVSS 4.0
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.

Metadata

CVE ID
CVE-2026-12537
State
PUBLISHED
Assigner
GoogleCloud
Reserved
2026-06-17 15:08 UTC
Published
2026-06-24 13:37 UTC
Last updated
2026-06-24 13:53 UTC
Primary CWE
CWE-20
CWE-20 Improper Input Validation
Vendor / Product
Google Cloud / Gemini CLI
Sources
cve.org  ·  NVD

Severity & Metrics

10.0 CRITICAL CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Clear
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
total
Affected products (2)
VendorProductPlatformVersions
Google Cloud Gemini CLI — 0 < 0.39.1
Google Cloud run-gemini-cli GitHub Action — 0 < 0.1.22
Weakness (CWE)
CWESourceDescription
CWE-20 cna CWE-20 Improper Input Validation
CVSS scores (1)
ScoreSeverityVersionSourceVector
10.0 CRITICAL 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Clear
References (1)
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