CVE-2026-1253710.0CriticalCWE-20
CVE-2026-12537: Unauthenticated Remote Code Execution in Gemini CLI CI/CD Workflows
Google Cloud · Gemini CLI
Vendor fix available · Affected: Google Cloud Gemini CLI · Exploitation: not established
ExploitationNot established
Not in CISA KEV as of catalogue 2026.11.13 (13 Nov)
- In CISA KEV: not seen
- Exploited (reported): not seen
- Scanning observed: not seen
- Proof of concept public: not seen
- Not establishedNothing in the sources we check
0.2%probability of exploitation in the next 30 days
11th percentile
050100
Higher than 11% of scored CVEs
10.0CriticalCVSS 4.0
LowMediumHighCrit.
DescriptionNVD
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.
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Google Cloud
- Published
- June 2026
Coverage1 article · 1 outlet
First in our coverage: SecurityOnline, 29 Jun.
- Gemini CLI flaw allows remote code execution (CVE-2026-12537)SecurityOnline · first in our coverage
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