Path traversal in py3-virtualenv - CVE-2026-113719
Published: November 9, 2026
Vulnerability identifier: #VU163147
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-113719
CWE-ID: CWE-22
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker with low privileges to delete files and directories outside a virtual environment using the invoking user's permissions.
The vulnerability exists due to missing path containment checks in virtualenv's app-data seeder when removing previously installed seed packages during environment reuse. A local attacker with low privileges can plant traversal entries in existing package metadata so that a victim reseeding the environment deletes targeted paths they have permission to remove.
Affected software
py3-virtualenv
How to mitigate CVE-2026-113719
Install security update from vendor's website.
py3-virtualenv - update to 21.14.9