CVE-2026-113723: Command Injection

Description

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, caller-supplied prompt text can become executable syntax in the bash activation prompt. An attacker must influence the value passed to virtualenv, and a user must subsequently activate the environment and draw the prompt. This vulnerability is fixed in 21.14.9.

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Weakness Type (CWE)

CWE-78 OS Command Injection

References

Other References

https://github.com/pypa/virtualenv/commit/5f48d711731311428aebfae61d46957762155b22 https://github.com/pypa/virtualenv/pull/3418 https://github.com/pypa/virtualenv/releases/tag/21.14.9 https://github.com/pypa/virtualenv/security/advisories/GHSA-6w3r-xr62-4xcp

Frequently Asked Questions

What is CVE-2026-113723? +

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, caller-supplied prompt text can become executable syntax in the bash activation prompt. An attacker must influence the value passed to virtualenv, and a user must subsequently activate the environment and draw the prompt. This vulnerability is fixed in 21.14.9.

How do I check if I'm vulnerable to CVE-2026-113723? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-113723