CVE-2026-28684 (Medium) detected in python_dotenv-0.15.0-py2.py3-none-any.whl

[mend-bolt-for-github]

CVE-2026-28684 - Medium Severity Vulnerability

Vulnerable Library - python_dotenv-0.15.0-py2.py3-none-any.whl

Read key-value pairs from a .env file and set them as environment variables

Library home page: https://files.pythonhosted.org/packages/32/2e/e4585559237787966aad0f8fd0fc31df1c4c9eb0e62de458c5b6cde954eb/python_dotenv-0.15.0-py2.py3-none-any.whl

Path to dependency file: /day70/requirements.txt

Path to vulnerable library: /day70/requirements.txt

Dependency Hierarchy:

• ❌ python_dotenv-0.15.0-py2.py3-none-any.whl (Vulnerable Library)

Found in HEAD commit: c88b9429eb68a85b22f0e39cac7bf20b89cb6709

Found in base branch: master

Vulnerability Details

python-dotenv reads key-value pairs from a .env file and can set them as environment variables. Prior to version 1.2.2, "set_key()" and "unset_key()" in python-dotenv follow symbolic links when rewriting ".env" files, allowing a local attacker to overwrite arbitrary files via a crafted symlink when a cross-device rename fallback is triggered. Users should upgrade to v.1.2.2 or, as a workaround, apply the patch manually.

Publish Date: 2026-04-20

URL: CVE-2026-28684

CVSS 3 Score Details (6.6)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: Required
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-mf9w-mj56-hr94

Release Date: 2026-04-20

Fix Resolution: 1.2.2

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