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CVE-2026-68939 Details

Description

Pyenv provides simple Python version management. Prior to 2.8.0, is_version_safe() in libexec/pyenv-version-file-read accepts shell glob metacharacters in .python-version values, and unquoted PYENV_VERSION expansion in libexec/pyenv-version-name, libexec/pyenv-which, libexec/pyenv-prefix, libexec/pyenv-local, libexec/pyenv-global, libexec/pyenv-version, and libexec/pyenv-versions pathname-expands the value against the current directory, allowing a matching attacker-controlled file to silently select a different installed interpreter or version. This issue is fixed in version 2.8.0.

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/pyenv/pyenv/security/advisories/GHSA-g478-f579-9vp9	CISA-ADP
https://github.com/pyenv/pyenv/commit/95df7dbc7b34595b47c9b922de198547effda819	[email protected]
https://github.com/pyenv/pyenv/releases/tag/v2.8.0	[email protected]
https://github.com/pyenv/pyenv/security/advisories/GHSA-g478-f579-9vp9	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-155	Improper Neutralization of Wildcards or Matching Symbols	[email protected]
CWE-78	Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')	[email protected]
CWE-88	Improper Neutralization of Argument Delimiters in a Command ('Argument 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
Aug 18, 2026	CVE Modified	CISA-ADP
Aug 18, 2026	New CVE Received	[email protected]