Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/pypa/virtualenv/commit/e5fc2e6e189a877ff559af288919e3525d13e5
- https://github.com/pypa/virtualenv/pull/3432
- https://github.com/pypa/virtualenv/releases/tag/21.14.9
- https://github.com/pypa/virtualenv/security/advisories/GHSA-394h-qwmc-48pf
- https://github.com/pypa/virtualenv/security/advisories/GHSA-394h-qwmc-48pf
FAQ
What is CVE-2026-113718?
CVE-2026-113718 is a documented vulnerability. 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 ...
How severe is CVE-2026-113718?
CVSS scoring is not yet available for CVE-2026-113718. Check NVD for updates.
Is there a patch for CVE-2026-113718?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.