ALT-PU-2026-1183-3

Package update python3-module-virtualenv in branch sisyphus

Version20.36.1-alt1

Published2026-07-27

Max severityMEDIUM

Severity:

Closed issues (3)

MEDIUM4.5

Уязвимость инструмента для создания изолированных виртуальных окружений в Python virtualenv, связанная с ошибками синхронизации при использовании общего ресурса, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-07-14Modified: 2026-07-15

CVSS 3.xMEDIUM 4.5

CVSS:3.x/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS 2.0LOW 3.5

CVSS:2.0/AV:L/AC:H/Au:S/C:P/I:P/A:P

References

MEDIUM4.5

virtualenv is a tool for creating isolated virtual python environments. Prior to version 20.36.1, TOCTOU (Time-of-Check-Time-of-Use) vulnerabilities in virtualenv allow local attackers to perform symlink-based attacks on directory creation operations. An attacker with local access can exploit a race condition between directory existence checks and creation to redirect virtualenv's app_data and lock file operations to attacker-controlled locations. This issue has been patched in version 20.36.1.

Published: 2026-01-10Modified: 2026-06-17

CVSS 3.xMEDIUM 4.5

CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

References

GHSA-597g-3phw-6986

MEDIUM4.5

virtualenv Has TOCTOU Vulnerabilities in Directory Creation

Published: 2026-01-13

CVSS 3.xMEDIUM 4.5

CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

References