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CVE-2026-113718 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/pypa/virtualenv/security/advisories/GHSA-394h-qwmc-48pf	CISA-ADP
https://github.com/pypa/virtualenv/commit/e5fc2e6e189a877ff559af288919e3525d13e5e0	[email protected]
https://github.com/pypa/virtualenv/pull/3432	[email protected]
https://github.com/pypa/virtualenv/releases/tag/21.14.9	[email protected]
https://github.com/pypa/virtualenv/security/advisories/GHSA-394h-qwmc-48pf	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-94	Improper Control of Generation of Code ('Code Injection')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 27, 2026	CVE Modified	CISA-ADP
Oct 20, 2026	New CVE Received	[email protected]