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    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 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.

    Published:Oct 20, 2026
    Last Modified:Oct 27, 2026
    EPS:Oct 20, 2026
    EPSS Score:0.00236
    CVSS Score:7.8

    Affected Products

    Vendor
    Pypa
    Product
    Virtualenv

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-115586 (CVSS 7.1) — virtualenv is a tool for creating isolated virtual python environments. From 21.14.9 until 21.14.13, the bash …
    CVE-2026-113726 (CVSS 7.8) — virtualenv is a tool for creating isolated virtual python environments. Prior to 21.13.0, the bash activate sc…
    CVE-2026-113776 (CVSS 7.8) — virtualenv is a tool for creating isolated virtual python environments. From 20.26.6 until 21.14.2, ViaTemplat…
    CVE-2026-113725 (CVSS 7.8) — virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.7, the bash activate sc…
    CVE-2026-113724 (CVSS 4.5) — virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the safe_delete() de…
    CVE-2026-113723 (CVSS 7.1) — virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, caller-supplied prom…
    CVE-2026-113722 (CVSS 7.8) — virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, virtualenv's ScriptM…
    CVE-2026-113721 (CVSS 4.5) — virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, ViaTemplateActivator…
    CVE-2026-113720 (CVSS 4.4) — virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the app-data copy se…
    CVE-2026-113715 (CVSS 2) — virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the stdlib venv crea…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High