High 7.1Published Oct 20, 2026

CVE-2026-113723virtualenv: Bash prompt values can change meaning under older compatibility modes

Updated under an hour ago (Oct 28, 2026, 6:50 PM ET)

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

EPSS puts the chance of exploitation in the next 30 days at 0.24%, higher than 15% of scored CVEs.

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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 21.14.9, 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.

CVSS: 7.1 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-78
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.24% (percentile 15)
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Oct 27, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

pypa virtualenv pypa:virtualenv (from the name)	before 21.14.9	CNA record

References

References

https://github.com/pypa/virtualenv/security/advisories/GHSA-6w3r-xr62-4xcp	x-refsource-confirm
https://github.com/pypa/virtualenv/pull/3418	x-refsource-misc
https://github.com/pypa/virtualenv/commit/5f48d711731311428aebfae61d46957762155b22	x-refsource-misc
https://github.com/pypa/virtualenv/releases/tag/21.14.9	x-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.