---
id: CVE-2021-21386
aliases:
  - GHSA-8434-v7xw-8m9x
  - PYSEC-2026-281
title: >-
  Improper Neutralization of Argument Delimiters in a Decompiling Package
  Process in APKLeaks
summary: >-
  Improper Neutralization of Argument Delimiters in a Decompiling Package
  Process in APKLeaks
severity: critical
cvss: 9.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N'
vendor: apkleaks
product: apkleaks
ecosystem: pip
affected:
  - apkleaks < 2.0.4
patched:
  - apkleaks 2.0.4
published: '2022-01-21'
updated: '2026-07-08'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-8434-v7xw-8m9x'
references:
  - url: >-
      https://github.com/dwisiswant0/apkleaks/security/advisories/GHSA-8434-v7xw-8m9x
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2021-21386'
  - url: >-
      https://github.com/dwisiswant0/apkleaks/commit/a966e781499ff6fd4eea66876d7532301b13a382
  - url: 'https://github.com/dwisiswant0/apkleaks'
tags:
  - osv
  - pip
epss: 0.02326
epssPercentile: 0.82819
ingestedAt: '2026-07-08T18:25:47.287Z'
---

## Overview

APKLeaks prior to v2.0.4 allows remote authenticated attackers to execute arbitrary OS commands via package name inside the application manifest.

### Impact

An authenticated attacker could include arguments that allow unintended commands or code to be executed, allow sensitive data to be read or modified, or could cause other unintended behavior through malicious package names.


### References

- a966e781499ff6fd4eea66876d7532301b13a382

### For more information

If you have any questions or comments about this advisory:
* Email me at [me@dw1.io](mailto:me@dw1.io)


## Affected packages

- `apkleaks < 2.0.4`

## Remediation

Upgrade to a patched release:

- `apkleaks 2.0.4`