Vulnerability Details 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 platforms allows an unprivileged attacker to achieve pre-sandbox host-level code execution a maliciously crafted .gemini/.env file.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 3.2%
CVSS Severity
CVSS v3 Score 7.8
References
Products affected by CVE-2026-12537
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cpe:2.3:a:google:gemini-cli:*
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cpe:2.3:a:google:gemini-cli:0.40.0
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cpe:2.3:a:google:run-gemini-cli:0.1.1
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cpe:2.3:a:google:run-gemini-cli:0.1.10
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cpe:2.3:a:google:run-gemini-cli:0.1.11
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cpe:2.3:a:google:run-gemini-cli:0.1.12
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cpe:2.3:a:google:run-gemini-cli:0.1.13
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cpe:2.3:a:google:run-gemini-cli:0.1.14
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cpe:2.3:a:google:run-gemini-cli:0.1.15
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cpe:2.3:a:google:run-gemini-cli:0.1.16
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cpe:2.3:a:google:run-gemini-cli:0.1.17
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cpe:2.3:a:google:run-gemini-cli:0.1.18
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cpe:2.3:a:google:run-gemini-cli:0.1.19
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cpe:2.3:a:google:run-gemini-cli:0.1.2
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cpe:2.3:a:google:run-gemini-cli:0.1.20
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cpe:2.3:a:google:run-gemini-cli:0.1.21
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cpe:2.3:a:google:run-gemini-cli:0.1.3
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cpe:2.3:a:google:run-gemini-cli:0.1.4
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cpe:2.3:a:google:run-gemini-cli:0.1.5
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cpe:2.3:a:google:run-gemini-cli:0.1.6
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cpe:2.3:a:google:run-gemini-cli:0.1.7
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cpe:2.3:a:google:run-gemini-cli:0.1.8
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cpe:2.3:a:google:run-gemini-cli:0.1.9