An issue was discovered in Python before 3.11.1. An unnecessary quadratic algorithm exists in one path when processing some inputs to the IDNA (RFC 3490) decoder, such that a crafted, unreasonably long name being presented to the decoder could lead to a CPU denial of service. Hostnames are often supplied by remote servers that could be controlled by a malicious actor; in such a scenario, they could trigger excessive CPU consumption on the client attempting to make use of an attacker-supplied supposed hostname. For example, the attack payload could be placed in the Location header of an HTTP response with status code 302. A fix is planned in 3.11.1, 3.10.9, 3.9.16, 3.8.16, and 3.7.16.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, 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 and availability (service disruption) for affected systems. Impacting 10 products from python, from fedoraproject, from netapp and 7 others, organizations running these solutions should prioritize assessment and patching.
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.
2022-11-09T07:15:09.887
2025-11-03T22:16:01.150
Modified
CVSSv3.1: 7.5 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | python | python | ≤ 3.7.15 | Yes |
| Application | python | python | ≤ 3.8.15 | Yes |
| Application | python | python | ≤ 3.9.15 | Yes |
| Application | python | python | ≤ 3.10.8 | 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 |
| 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 |
| Application | netapp | active_iq_unified_manager | - | Yes |
| Application | netapp | active_iq_unified_manager | - | Yes |
| Application | netapp | e-series_performance_analyzer | - | Yes |
| Application | netapp | element_software | - | Yes |
| Application | netapp | hci | - | Yes |
| Application | netapp | management_services_for_element_software | - | Yes |
| Application | netapp | ontap_select_deploy_administration_utility | - | Yes |
| Operating System | netapp | bootstrap_os | - | Yes |
| Hardware | netapp | hci_compute_node | - | No |
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.