CVE-2026-115586
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
29/100
Published: 2026-10-23
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
No Auth
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
High
PR:
None
UI:
Active
S:
X
AT:
Present
VC:
High
VI:
High
VA:
High
Description
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.