High severity · published Oct 20, 2026
CVE-2026-113723
virtualenv: Bash prompt values can change meaning under older compatibility modes
7.1
CVSS
0.2%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
virtualenv · pypa
< 21.14.9 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-113723
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-113723
github.com
https://github.com/pypa/virtualenv/commit/5f48d711731311428aebfae61d46957762155b22
github.com
https://github.com/pypa/virtualenv/pull/3418
github.com
https://github.com/pypa/virtualenv/releases/tag/21.14.9
github.com
https://github.com/pypa/virtualenv/security/advisories/GHSA-6w3r-xr62-4xcp
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