HIGH 7.8 NVD
CVE-2026-113732
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX
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.
References
- https://github.com/pypa/virtualenv/commit/3bddeaf8d02c3ee7f576503efb082f8f494cfcab
- https://github.com/pypa/virtualenv/releases/tag/21.14.2
- https://github.com/pypa/virtualenv/security/advisories/GHSA-c947-3pg5-gm8q
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-10-20 via NVD.
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