CVE-2026-115586

virtualenv is a tool for creating isolated virtual python environments. From 21.14.9 until 21.14.13, the bash bin/activate script can copy an attacker-controlled --prompt value into PS1 without escaping dollar signs or backticks when both promptvars and POSIX mode are disabled during activation. Re-enabling promptvars, running set -o posix, or starting an interactive child bash that inherits the exported PS1 can then expand command substitution in the stored VIRTUAL_ENV_PROMPT value and execute commands as the user who activates the environment. This issue is fixed in version 21.14.13.

CVSS

No CVSS.

References

Link	Resource
https://github.com/pypa/virtualenv/commit/3598e201f6f044e389136b2347a8a919ac03c5f4
https://github.com/pypa/virtualenv/pull/3466
https://github.com/pypa/virtualenv/releases/tag/21.14.13
https://github.com/pypa/virtualenv/security/advisories/GHSA-cx6f-vjhg-g3cc

Configurations

No configuration.

History

23 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-23 20:17

Updated : 2026-10-26 13:45

NVD link : CVE-2026-115586

Mitre link : CVE-2026-115586

CVE.ORG link : CVE-2026-115586

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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