{"id":"CVE-2026-113732","aliases":[],"title":"virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote","description":"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21.14.2.","severity":"high","score":7.8,"published":"2026-10-20T22:01:23.931Z","modified":"2026-10-27T13:26:51.760Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/pypa/virtualenv/security/advisories/GHSA-c947-3pg5-gm8q","https://github.com/pypa/virtualenv/commit/3bddeaf8d02c3ee7f576503efb082f8f494cfcab","https://github.com/pypa/virtualenv/releases/tag/21.14.2"],"sources":[{"name":"CVE","id":"CVE-2026-113732","modified":"2026-10-27T13:26:51.760Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-113732"}],"assessments":[{"source":"CNA","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8}]}