---
title: "CVE-2026-113723: virtualenv - Command Injection"
description: "virtualenv < 21.14.9 contains a command injection caused by caller-supplied prompt text in the bash activation prompt, letting attackers execute arbitrary commands when a user activates the environment, exploit requires attacker to influence prompt text and user activation."
url: https://panop.io/threat-heartbeat/CVE-2026-113723/
---

# CVE-2026-113723 virtualenv - Command Injection

virtualenv < 21.14.9 contains a command injection caused by caller-supplied prompt text in the bash activation prompt, letting attackers execute arbitrary commands when a user activates the environment, exploit requires attacker to influence prompt text and user activation.

CVSS base score 7.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-113723)

## Details

Type

Command Injection

Impact

Remote Code Execution

CVSS vector

CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

20 October 2026

Updated

21 October 2026

Weakness

[CWE-78](https://cwe.mitre.org/data/definitions/78.html)

## Vendor fix

Update to version 21.14.9 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-113723](https://nvd.nist.gov/vuln/detail/CVE-2026-113723)
- [https://github.com/pypa/virtualenv/commit/5f48d711731311428aebfae61d46957762155b22](https://github.com/pypa/virtualenv/commit/5f48d711731311428aebfae61d46957762155b22)
- [https://github.com/pypa/virtualenv/pull/3418](https://github.com/pypa/virtualenv/pull/3418)
- [https://github.com/pypa/virtualenv/releases/tag/21.14.9](https://github.com/pypa/virtualenv/releases/tag/21.14.9)
- [https://github.com/pypa/virtualenv/security/advisories/GHSA-6w3r-xr62-4xcp](https://github.com/pypa/virtualenv/security/advisories/GHSA-6w3r-xr62-4xcp)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)