{"id":"CVE-2026-113718","published":"2026-10-20T20:17:18.197","lastModified":"2026-10-22T16:47:38.403","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, POSIX xonsh activation quote() uses repr() to write printable non-ASCII prompt or destination data into UTF-8 activate.xsh, while xonsh can read that script using $XONSH_ENCODING. Under a legacy multibyte codec such as GBK or Big5, a UTF-8 trail byte can consume the backslash before an adjacent quote, allowing the literal to close and attacker-influenced statements to execute when the user sources the generated script. This issue is fixed in version 21.14.9.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-94"],"vendors":[],"products":[],"references":[{"url":"https://github.com/pypa/virtualenv/commit/e5fc2e6e189a877ff559af288919e3525d13e5e0","tags":[]},{"url":"https://github.com/pypa/virtualenv/pull/3432","tags":[]},{"url":"https://github.com/pypa/virtualenv/releases/tag/21.14.9","tags":[]},{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-394h-qwmc-48pf","tags":[]}],"exploitRefs":[{"url":"https://github.com/pypa/virtualenv/commit/e5fc2e6e189a877ff559af288919e3525d13e5e0","tags":[]},{"url":"https://github.com/pypa/virtualenv/pull/3432","tags":[]},{"url":"https://github.com/pypa/virtualenv/releases/tag/21.14.9","tags":[]},{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-394h-qwmc-48pf","tags":[]}],"hasPoc":true,"ai":null}