Download of Code Without Integrity Check Affecting python311-virtualenv package, versions <20.22.0-150400.9.12.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.16% (5th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-SLES155-PYTHON311VIRTUALENV-20968421
  • published15 Oct 2026
  • disclosed13 Oct 2026

Introduced: 13 Oct 2026

NewCVE-2026-102930  (opens in a new tab)
CWE-494  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 python311-virtualenv to version 20.22.0-150400.9.12.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python311-virtualenv package and not the python311-virtualenv package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.12, download_wheel() accepts pip and setuptools seed wheels fetched for periodic updates or the --download option without checking their bytes against an authoritative digest equivalent to the embedded wheels' BUNDLE_SHA256 verification. A compromised index, stale mirror, or intercepted TLS connection can substitute a different wheel under the requested distribution, version, and filename, after which virtualenv caches and seeds the attacker-controlled wheel into subsequently created environments. The verification applies to the default PyPI path and is intentionally skipped when PIP_INDEX_URL, PIP_EXTRA_INDEX_URL, or PIP_INDEX configures a custom index that may legitimately publish rebuilt wheels. This issue is fixed in version 21.7.12.

CVSS Base Scores

version 3.1