BIT-virtualenv-2026-113732

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    BIT-virtualenv-2026-113732

    Published: 29 Oct 2026Last Modified: 29 Oct 2026

    Summary: virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote

    Details: 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, https://nvd.nist.gov/vuln/detail/CVE-2026-113732

    Affected packages

    Package

    Name: virtualenv

    Purl: pkg:bitnami/virtualenv

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -21.14.2

    Affected versions

    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
    BIT-virtualenv-2026-113732 | CVE-DB