CVE-2026-50187 Oh My Zsh: Arbitrary Code Execution in oh-my-zsh dotenv plugin via malicious .env files
Attackers can execute arbitrary shell commands by placing malicious .env files in directories, affecting users of the Oh My Zsh dotenv plugin.
- 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-2026-50187?
CVE-2026-50187 is a high-severity code injection vulnerability in ohmyzsh, published on 18 Aug 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
Oh My Zsh is a community-driven framework for managing Zsh configuration. Prior to 2026-05-28, the dotenv plugin in plugins/dotenv/dotenv.plugin.zsh passes ZSH_DOTENV_FILE to source after a directory change into a folder containing a .env file, allowing syntactically valid shell commands in the file to execute with the current account's privileges, including without a prompt when ZSH_DOTENV_PROMPT=false or after the default prompt accepts an empty Enter response. This issue is fixed in versions released after 2026-05-28.
Weakness: CWE-94
Which versions are affected by CVE-2026-50187?
How do I fix CVE-2026-50187?
No fix has been published for CVE-2026-50187 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-2026-50187 being exploited?
There is no known exploitation of CVE-2026-50187 in the wild and no public exploit code.
Sources
Also known as GHSA-3rgh-p3mg-rjqg.