Missing Release of Resource after Effective Lifetime Affecting nodejs package, versions <12.21.0~dfsg-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
74.35% (100th percentile)

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  • Snyk IDSNYK-ECHOLATEST-NODEJS-18427044
  • published30 Jul 2026
  • disclosed3 Mar 2021

Introduced: 3 Mar 2021

CVE-2021-22883  (opens in a new tab)
CWE-772  (opens in a new tab)

How to fix?

Upgrade Echo:latest nodejs to version 12.21.0~dfsg-1 or higher.

NVD Description

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

Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file descriptors. If a file descriptor limit is configured on the system, then the server is unable to accept new connections and prevent the process also from opening, e.g. a file. If no file descriptor limit is configured, then this lead to an excessive memory usage and cause the system to run out of memory.

CVSS Base Scores

version 3.1