VULNERABILITY INTELLIGENCE

CVE-2021-22883

CVSS score7.5 HIGH
EPSS probability77.39%
CISA KEVNot currently listed
Published2021-03-03
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • support@hackerone.com: CWE-400
  • nvd@nist.gov: CWE-772

Primary references