# CVE-2023-3637: PYSEC-2026-1694 - Denial of service in neutron

Source: https://junglewise.ai/threats/cve-2023-3637-denial-of-service-in-neutron  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-07  
License: CC BY 4.0 with a link back

CVE-2023-3637 · Severity: low · CVSS 3.1 · Published 2026-07-07

Denial of service in neutron

Technologies: [neutron (PyPI)](https://junglewise.ai/threats/technologies/pypi-neutron). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2023-3637 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-3637 being exploited in the wild.

**How severe is CVE-2023-3637?** Low severity, with a CVSS score of 3.1, published 7 July 2026.

**Which products and versions are affected?** neutron (PyPI) ECOSYSTEM:introduced=0,last_affected=22.0.2.

**Is there a fix for CVE-2023-3637?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2023-3637?** Check whether you run neutron (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- neutron (PyPI) ECOSYSTEM:introduced=0,last_affected=22.0.2

## Identifiers

- CVE-2023-3637
- GHSA-r3jh-qhgj-gvr8
- PYSEC-2026-1694

## Related threats

- [PYSEC-2026-1693 - OpenStack Neutron can use an incorrect ID during policy enforcement](https://junglewise.ai/threats/cve-2024-53916-openstack-neutron-can-use-an-incorrect-id-during-policy)
- [PYSEC-2026-855 - openstack-neutron uncontrolled resource consumption flaw](https://junglewise.ai/threats/cve-2022-3277-openstack-neutron-uncontrolled-resource-consumption-flaw)
- [PYSEC-2026-851 - OpenStack Neutron Improper Authentication vulnerability](https://junglewise.ai/threats/cve-2014-0056-openstack-neutron-improper-authentication-vulnerability)
- [PYSEC-2026-853 - OpenStack Neutron Race condition vulnerability](https://junglewise.ai/threats/cve-2015-5240-openstack-neutron-race-condition-vulnerability)
- [PYSEC-2026-852 - OpenStack Neutron Intended MAC-spoofing protection mechanism bypass](https://junglewise.ai/threats/cve-2016-5363-openstack-neutron-intended-mac-spoofing-protection-mechanism)