High 7.8Published Oct 20, 2026

CVE-2026-113725virtualenv bash activate runs commands from an environment name with a backslash before $

Updated under an hour ago (2026-10-21 11:20 UTC)

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It affects pypa virtualenv. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for pypa virtualenv

Exploited in the last 30 days

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.7, the bash activate script escapes the environment name for only one of the two passes bash makes over PS1, so a backslash in the name undoes the escaping and a name containing \$(...) runs as commands in the user's shell each time bash draws the prompt. This issue is fixed in version 21.14.7.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-78, CWE-116
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Received
Record last updated: Oct 20, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

pypa virtualenv pypa:virtualenv (from the name)	before 21.14.7	CNA record

References

https://github.com/pypa/virtualenv/security/advisories/GHSA-vxj4-q4g9-crj7x-refsource-confirm
https://github.com/pypa/virtualenv/commit/c3104e02474b652832a9bbaae79f6e1696296932x-refsource-misc
https://github.com/pypa/virtualenv/releases/tag/21.14.7x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.