Bug 2556411 (CVE-2026-113718) - CVE-2026-113718 virtualenv: virtualenv: arbitrary code execution via improper quoting in xonsh activation scripts
Summary: CVE-2026-113718 virtualenv: virtualenv: arbitrary code execution via improper...
Keywords:
Status: NEW
Alias: CVE-2026-113718
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-20 19:51 UTC by OSIDB Bzimport
Modified: 2026-11-03 08:28 UTC (History)
63 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-20 19:51:45 UTC 
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.
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