Oh My Zsh prior 2026-05-28 dotenv dotenv.plugin.zsh ZSH_DOTENV_FILE os command injection

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Oh My Zsh. The affected element is an unknown function of the file plugins/dotenv/dotenv.plugin.zsh of the component dotenv. Performing a manipulation of the argument ZSH_DOTENV_FILE results in os command injection. This vulnerability is cataloged as CVE-2026-50187. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability was found in Oh My Zsh. It has been classified as problematic. This affects an unknown functionality of the file plugins/dotenv/dotenv.plugin.zsh of the component dotenv. The manipulation of the argument ZSH_DOTENV_FILE with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-50187 since 06/04/2026. The exploitability is told to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

Upgrading to version 2026-05-28 eliminates this vulnerability.

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• Oh My Zsh

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