virtualenv Has TOCTOU Vulnerabilities in Directory Creation

• cbl2 python-virtualenv 20.26.6-3 on CBL Mariner 2.0

• cbl2 python-virtualenv 20.26.6-2 on CBL Mariner 2.0

• azl3 python-virtualenv 20.25.0-3 on Azure Linux 3.0

• cbl2 python-virtualenv 20.26.6-3 on CBL-Mariner 2.0

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

1. Oct 7, 2026 at 8:15 AM UTC
   • The vendor changed its remediation guidance.

1. Jan 13, 2026 at 1:02 AM UTC
   Published by Microsoft Security Response Center

   The publication date reported by the vendor.

2. Sep 29, 2026 at 11:40 AM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

3. Oct 7, 2026 at 1:53 AM UTC
   Updated by Microsoft Security Response Center

   The vendor changed the advisory after it was first published.

4. Nov 8, 2026 at 7:27 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.