Vulnerability Monitor

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CVE-2021-28861


Python 3.x through 3.10 has an open redirection vulnerability in lib/http/server.py due to no protection against multiple (/) at the beginning of URI path which may leads to information disclosure. NOTE: this is disputed by a third party because the http.server.html documentation page states "Warning: http.server is not recommended for production. It only implements basic security checks."


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.4, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 2 products from python, from fedoraproject organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2022-08-23T01:15:07.617

Last Modified

2025-12-17T22:15:56.490

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.4 (HIGH)

Weaknesses
  • Type: Primary
    CWE-601
  • Type: Secondary
    CWE-601

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application python python < 3.7.14 Yes
Application python python < 3.8.14 Yes
Application python python < 3.9.14 Yes
Application python python < 3.10.6 Yes
Application python python 3.11.0 Yes
Application python python 3.11.0 Yes
Application python python 3.11.0 Yes
Application python python 3.11.0 Yes
Application python python 3.11.0 Yes
Application python python 3.11.0 Yes
Application python python 3.11.0 Yes
Application python python 3.11.0 Yes
Application python python 3.11.0 Yes
Application python python 3.11.0 Yes
Operating System fedoraproject fedora 35 Yes
Operating System fedoraproject fedora 36 Yes
Operating System fedoraproject fedora 37 Yes

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For python's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.