virtualenv: Command injection via --prompt in activate.bat (batch activator)

Date Oct 1, 2026
Type Vendor advisory
Signal High-risk advisory
Vendor / Product PyPI ยท virtualenv
CVE CVE-2026-102937
High-risk advisory CVE-2026-102937

Summary

virtualenv: Command injection via --prompt in activate.bat (batch activator)

Why it matters

GitHub has published a reviewed security advisory for virtualenv. Prioritize it with other application dependency updates, especially because EPSS places it in the 3% percentile.

Operator check

Check whether virtualenv is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 7.3. EPSS probability: 0.1%; percentile: 3%.

Sources

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.