Vulnerability Monitor

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CVE-2023-27043


The email module of Python through 3.11.3 incorrectly parses e-mail addresses that contain a special character. The wrong portion of an RFC2822 header is identified as the value of the addr-spec. In some applications, an attacker can bypass a protection mechanism in which application access is granted only after verifying receipt of e-mail to a specific domain (e.g., only @company.example.com addresses may be used for signup). This occurs in email/_parseaddr.py in recent versions of Python.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.3, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited integrity, for affected systems. Impacting 4 products from fedoraproject, from netapp, from netapp and 1 other, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2023, 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

2023-04-19T00:15:07.973

Last Modified

2025-12-17T22:15:57.470

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.3 (MEDIUM)

Weaknesses
  • Type: Primary
    CWE-20
  • Type: Secondary
    CWE-20
    CWE-1286

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System fedoraproject fedora 38 Yes
Operating System fedoraproject fedora 39 Yes
Application netapp active_iq_unified_manager - Yes
Application netapp active_iq_unified_manager - Yes
Application netapp ontap_select_deploy_administration_utility - Yes
Application python python ≤ 2.7.18 Yes
Application python python < 3.8.20 Yes
Application python python < 3.9.20 Yes
Application python python < 3.10.15 Yes
Application python python < 3.11.10 Yes
Application python python < 3.12.6 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 fedoraproject'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.