CVE-2026-13745 Arbitrary Code Execution in Gemini CLI via Untrusted Local .env Files Overriding GEMINI_CLI_HOME
Attackers can execute arbitrary code by tricking users into running Gemini CLI in untrusted directories with malicious .env files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-13745?
CVE-2026-13745 is a high-severity code injection vulnerability in Google Cloud Gemini CLI, published on 10 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A vulnerability in the Gemini CLI prior to version 0.39.1 allows attackers to achieve arbitrary code execution by tricking a victim into starting the CLI within an untrusted directory. The vulnerability is triggered via untrusted .env files overriding GEMINI_CLI_HOME to load malicious configuration files and bypass folder trust prompts.
Which versions are affected by CVE-2026-13745?
How do I fix CVE-2026-13745?
No fix has been published for CVE-2026-13745 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-13745 being exploited?
There is no known exploitation of CVE-2026-13745 in the wild and no public exploit code.
Sources
Also known as GHSA-2255-3477-vp73.