CVE-2021-28957 (Medium) detected in lxml-4.5.0-cp36-cp36m-manylinux1_x86_64.whl

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CVE-2021-28957 - Medium Severity Vulnerability

Vulnerable Library - lxml-4.5.0-cp36-cp36m-manylinux1_x86_64.whl

Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API.

Library home page: https://files.pythonhosted.org/packages/dd/ba/a0e6866057fc0bbd17192925c1d63a3b85cf522965de9bc02364d08e5b84/lxml-4.5.0-cp36-cp36m-manylinux1_x86_64.whl

Path to dependency file: testplan/requirements.txt

Path to vulnerable library: testplan/requirements.txt,testplan

Dependency Hierarchy:

• ❌ lxml-4.5.0-cp36-cp36m-manylinux1_x86_64.whl (Vulnerable Library)

Vulnerability Details

lxml 4.6.2 allows XSS. It places the HTML action attribute into defs.link_attrs (in html/defs.py) for later use in input sanitization, but does not do the same for the HTML5 formaction attribute.

Publish Date: 2021-03-21

URL: CVE-2021-28957

CVSS 3 Score Details (6.5)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28957

Release Date: 2021-03-21

Fix Resolution: 4.6.2

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