{"id":"CVE-2023-3637","aliases":["GHSA-r3jh-qhgj-gvr8","PYSEC-2026-1694"],"title":"Denial of service in neutron","summary":"Denial of service in neutron","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"neutron","product":"neutron","ecosystem":"pip","affected":["neutron <= 22.0.2"],"published":"2023-07-25","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:50:02.577902185Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-r3jh-qhgj-gvr8","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-3637"},{"url":"https://access.redhat.com/errata/RHSA-2023:4283"},{"url":"https://access.redhat.com/security/cve/CVE-2023-3637"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2222270"}],"tags":["osv","pip"],"epss":0.01305,"epssPercentile":0.69269,"ingestedAt":"2026-07-08T18:25:52.638Z","slug":"CVE-2023-3637","body":"## Overview\n\nAn uncontrolled resource consumption flaw was found in openstack-neutron. This flaw allows a remote authenticated user to query a list of security groups for an invalid project. This issue creates resources that are unconstrained by the user's quota. If a malicious user were to submit a significant number of requests, this could lead to a denial of service.\n\n## Affected packages\n\n- `neutron <= 22.0.2`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}