CVE-2026-102925
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
41/100
Published: 2026-09-29
Modified: 2026-11-09
First seen: 2026-11-09
Status: active
Attack Surface
Low Complexity
No Auth
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
None
UI:
Required
S:
Unchanged
C:
High
I:
High
A:
High
Description
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.13, the generated activate (bash and zsh) and activate.fish scripts place values already escaped by shlex.quote inside an additional quoted context. In the bash and zsh script, a crafted virtual environment path reaches __VIRTUAL_ENV__ when a relocated environment's recorded directory is absent; in the fish script, crafted Tcl or Tk library paths reach __TCL_LIBRARY__ or __TK_LIBRARY__. The surplus quotes can terminate the data-only quoted run and leave shell metacharacters parsed as commands when a user sources the activation script, allowing code execution with that user's privileges. This issue is fixed in version 21.7.13.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| virtualenv | virtualenv | < 21.7.13 |
References & Advisories (4)
Release Notes
Patch
Vendor Advisory
Mitigation
Patch
Issue Tracking
Patch