RCE in Ohmyzsh
CVE-2026-50187
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.
Vulnerability class: RCE (Remote Code Execution)
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Ohmyzsh — versions < 2026-05-28
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-50187?
- CVE-2026-50187 is a high-severity vulnerability in Ohmyzsh, classified under Code Injection. CVSS score: 8.8/10. Published 2026-08-18.
- How severe is CVE-2026-50187?
- High severity. CVSS v3 base score is 8.8 out of 10.