High severity · published Oct 20, 2026
CVE-2026-113725
virtualenv bash activate runs commands from an environment name with a backslash before $
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
virtualenv · pypa
< 21.14.7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-113725
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-113725
github.com
https://github.com/pypa/virtualenv/commit/c3104e02474b652832a9bbaae79f6e1696296932
github.com
https://github.com/pypa/virtualenv/releases/tag/21.14.7
github.com
https://github.com/pypa/virtualenv/security/advisories/GHSA-vxj4-q4g9-crj7
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