CVE-2026-115586

The virtualenv tool (versions 21.14.9 through 21.14.13 ) contains a regression where the bash bin/activate script fails to escape dollar signs or backticks in the --prompt value when promptvars and POSIX mode are disabled. This allows an attacker to inject command substitutions into the PS1 promp...

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)

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...

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)

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...