What’s Vulnerable › Vulnerabilities

CVE-2026-50187: Oh My Zsh: Arbitrary Code Execution in oh-my-zsh dotenv plugin via malicious .env files

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-18 · updated 2026-09-18
• Weakness: CWE-94

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.

Affected products

• ohmyzsh: before 2026-05-28

References

• https://github.com/ohmyzsh/ohmyzsh/commit/d170d18746bb06db7b2fc97b67e281597a3fc152
• https://github.com/ohmyzsh/ohmyzsh/pull/13778
• https://github.com/ohmyzsh/ohmyzsh/security/advisories/GHSA-3rgh-p3mg-rjqg

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