{"id":"CVE-2026-115586","published":"2026-10-23T20:17:21.363","lastModified":"2026-10-26T13:45:21.740","description":"virtualenv is a tool for creating isolated virtual python environments. From 21.14.9 until 21.14.13, the bash bin/activate script can copy an attacker-controlled --prompt value into PS1 without escaping dollar signs or backticks when both promptvars and POSIX mode are disabled during activation. Re-enabling promptvars, running set -o posix, or starting an interactive child bash that inherits the exported PS1 can then expand command substitution in the stored VIRTUAL_ENV_PROMPT value and execute commands as the user who activates the environment. This issue is fixed in version 21.14.13.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-78"],"vendors":[],"products":[],"references":[{"url":"https://github.com/pypa/virtualenv/commit/3598e201f6f044e389136b2347a8a919ac03c5f4","tags":[]},{"url":"https://github.com/pypa/virtualenv/pull/3466","tags":[]},{"url":"https://github.com/pypa/virtualenv/releases/tag/21.14.13","tags":[]},{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-cx6f-vjhg-g3cc","tags":[]}],"exploitRefs":[{"url":"https://github.com/pypa/virtualenv/commit/3598e201f6f044e389136b2347a8a919ac03c5f4","tags":[]},{"url":"https://github.com/pypa/virtualenv/pull/3466","tags":[]},{"url":"https://github.com/pypa/virtualenv/releases/tag/21.14.13","tags":[]},{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-cx6f-vjhg-g3cc","tags":[]}],"hasPoc":true,"ai":null}