CRLF Injection Affecting py3.10-virtualenv-bin package, versions <21.7.11-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-PY310VIRTUALENVBIN-20542269
  • published7 Oct 2026
  • disclosed29 Sept 2026

Introduced: 29 Sep 2026

NewCVE-2026-102938  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

Upgrade Minimos:latest py3.10-virtualenv-bin to version 21.7.11-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream py3.10-virtualenv-bin package and not the py3.10-virtualenv-bin package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write() writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg._read_values() parses the file with str.splitlines() and accepts the last value for duplicate keys. An attacker who influences --prompt, VIRTUALENV_PROMPT, or configuration input can insert a recognized line boundary and additional keys, including home, causing consumers to use an attacker-selected base interpreter or corrupted environment metadata. The security impact requires prompt input from outside the operator's trust boundary; directly supplied prompt content primarily corrupts the operator's own environment. This issue is fixed in version 21.7.11.

CVSS Base Scores

version 3.1