CVE-2026-4539 (Low) detected in pygments-2.19.2-py3-none-any.whl

[mend-bolt-for-github]

CVE-2026-4539 - Low Severity Vulnerability

Vulnerable Library - pygments-2.19.2-py3-none-any.whl

Pygments is a syntax highlighting package written in Python.

Library home page: https://files.pythonhosted.org/packages/c7/21/705964c7812476f378728bdf590ca4b771ec72385c533964653c68e86bdc/pygments-2.19.2-py3-none-any.whl

Path to dependency file: /test-requirements.txt

Path to vulnerable library: /tmp/ws-ua_20260307031138_XKLXPW/python_IBUTGV/20260307031140/pygments-2.19.2-py3-none-any.whl

Dependency Hierarchy:

• pytest-8.4.2-py3-none-any.whl (Root Library)
  • ❌ pygments-2.19.2-py3-none-any.whl (Vulnerable Library)

Found in HEAD commit: 733821ba208032bbe0d8b2992a2e4aece4265119

Found in base branch: main

Vulnerability Details

A security flaw has been discovered in pygments up to 2.19.2. The impacted element is the function AdlLexer of the file pygments/lexers/archetype.py. The manipulation results in inefficient regular expression complexity. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Publish Date: 2026-03-22

URL: CVE-2026-4539

CVSS 3 Score Details (3.3)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

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