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CVE-2026-113717: virtualenv: Pip seeding with download omits wheel digest verification

October 23, 2026

The pip seeder acquires bundled wheels with download=False and lets pip access the index when –download is selected. Index candidates on that path do not pass through virtualenv’s wheel digest verification.

Anthropic’s OSS Scanner reported this as ANT-2026-74ALJBUF in virtualenv-20261015-005, received on 15 October 2026.

References

  • github.com/advisories/GHSA-cx28-75q4-x26q
  • github.com/pypa/virtualenv/commit/7babec66e043e1cc8bc66869a063653898719d96
  • github.com/pypa/virtualenv/pull/3430
  • github.com/pypa/virtualenv/releases/tag/21.14.9
  • github.com/pypa/virtualenv/security/advisories/GHSA-cx28-75q4-x26q
  • nvd.nist.gov/vuln/detail/CVE-2026-113717

Code Behaviors & Features

Detect and mitigate CVE-2026-113717 with GitLab Dependency Scanning

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Affected versions

All versions before 21.14.9

Fixed versions

  • 21.14.9

Solution

Upgrade to version 21.14.9 or above.

Impact 5 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-494: Download of Code Without Integrity Check

Source file

pypi/virtualenv/CVE-2026-113717.yml

Spotted a mistake? Edit the file on GitLab.

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