Command Injection Vulnerability in Environment-Modules Package
Summary
ALSA-2026:82919: Moderate: environment-modules security update. Affects environment-modules versions < 4.5.2-5.el8_10. Fixed in 4.5.2-5.el8_10. How to fix ↓
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Background
The environment-modules package is designed to facilitate dynamic modification of user environments through the use of module files. These module files contain essential information for configuring the shell for various applications, allowing users to load and unload different environments seamlessly. This flexibility is crucial for managing dependencies and configurations in complex software environments. However, the package is vulnerable to command injection attacks when malicious module names containing shell metacharacters are used, which can lead to unauthorized command execution.
Vulnerability Detail
The vulnerability, identified as CVE-2026-85013, arises from a command injection flaw in the Bash completion feature of the environment-modules package. This issue allows an attacker to craft malicious module names that include shell metacharacters, potentially leading to arbitrary command execution in the user's shell environment. The ramifications of this vulnerability can be severe, as it may allow attackers to execute harmful commands with the privileges of the user running the shell, compromising system integrity and security.
How To Fix
Minimum fixed version
4.5.2-5.el8_10
This is the first release that contains the fix.
sudo dnf update environment-modulesTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can avoid using module names that contain shell metacharacters until the package is updated. This can help prevent potential exploitation of the vulnerability while waiting for a proper fix.
Conclusion
The command injection vulnerability in the environment-modules package poses a significant risk to users by allowing potential unauthorized command execution. It is crucial to update the package to the latest version to mitigate this risk. Users should remain vigilant and monitor their systems for any signs of exploitation.
See every vulnerability recorded for environment-modules →
FAQ
The environment-modules package allows users to dynamically modify their shell environment using module files, which configure the environment for different applications.
CVE-2026-85013 is the identifier for a command injection vulnerability in the environment-modules package that can be exploited through malicious module names.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The risks include unauthorized command execution in the user's shell, which can lead to system compromise and data breaches.
The best way to protect your system is to update the environment-modules package to the latest patched version as soon as it becomes available.
Related vulnerabilities
Recent vulnerabilities recorded for environment-modules.
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