CVE-2026-115586

CVE-2026-115586 · virtualenv: Bash activator leaves the --prompt value unescaped in PS1 when promptvars is off, so prompt expansion later executes it (regression in 21.14.9)

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virtualenv is a tool for creating isolated virtual python environments. From 21.14.9 until 21.14.13, the bash bin/activate script can copy an attacker-controlled --prompt value into PS1 without escaping dollar signs or backticks when both promptvars and POSIX mode are disabled during activation. Re-enabling promptvars, running set -o posix, or starting an interactive child bash that inherits the exported PS1 can then expand command substitution in the stored VIRTUAL_ENV_PROMPT value and execute commands as the user who activates the environment. This issue is fixed in version 21.14.13.

CVSS 7.1 · Élevée · EPSS 0,2% · Code d’exploitation public · Correctif disponible

Publication

2026-10-23T19:34:46.391Z

Mise à jour

2026-10-23T20:55:42.764Z

Pile logicielle: system · python

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