A AegiFlow
HIGHCVSS 7.1EPSS 0.1%

CVE-2026-113718

CVE-2026-113718 updated by NVD

Published
2026-10-23
Modified
2026-10-29
EPSS percentile
3%
Sources
github-advisory, nvd

Summary

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.

Affected packages

EcosystemPackageAffected versionsFixed versions
PyPIvirtualenv—21.14.9

Remediation: Upgrade to 21.14.9 or later.

References

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

CVE® is a registered trademark of The MITRE Corporation. CVE content reproduced under the CVE Terms of Use; copyright designation © MITRE.

EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.