A AegiFlow
HIGHCVSS 7.8EPSS 0.2%

CVE-2026-113732

CVE-2026-113732 updated by NVD

Published
2026-10-21
Modified
2026-10-29
EPSS percentile
11%
Sources
github-advisory, nvd

Summary

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.

Affected packages

EcosystemPackageAffected versionsFixed versions
PyPIvirtualenv—21.14.2

Remediation: Upgrade to 21.14.2 or later.

References

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.