Missing Release of Resource after Effective Lifetime Affecting neutron package, versions <2:19.0.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.77% (77th percentile)

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  • Snyk IDSNYK-ECHOLATEST-NEUTRON-18496102
  • published1 Aug 2026
  • disclosed8 Sept 2021

Introduced: 8 Sep 2021

CVE-2021-40797  (opens in a new tab)
CWE-772  (opens in a new tab)

How to fix?

Upgrade Echo:latest neutron to version 2:19.0.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream neutron package and not the neutron package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

An issue was discovered in the routes middleware in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. By making API requests involving nonexistent controllers, an authenticated user may cause the API worker to consume increasing amounts of memory, resulting in API performance degradation or denial of service.

CVSS Base Scores

version 3.1