{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-21714","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","state":"PUBLISHED","assignerShortName":"hackerone","dateReserved":"2026-01-04T15:00:06.574Z","datePublished":"2026-03-30T19:07:28.317Z","dateUpdated":"2026-03-31T18:05:22.283Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A memory leak occurs in Node.js HTTP/2 servers when a client sends WINDOW_UPDATE frames on stream 0 (connection-level) that cause the flow control window to exceed the maximum value of 2³¹-1. The server correctly sends a GOAWAY frame, but the Http2Session object is never cleaned up.\r\n\r\nThis vulnerability affects HTTP2 users on Node.js 20, 22, 24 and 25."}],"affected":[{"defaultStatus":"unaffected","vendor":"nodejs","product":"node","versions":[{"version":"20.20.1","status":"affected","lessThanOrEqual":"20.20.1","versionType":"semver"},{"version":"22.22.1","status":"affected","lessThanOrEqual":"22.22.1","versionType":"semver"},{"version":"24.14.0","status":"affected","lessThanOrEqual":"24.14.0","versionType":"semver"},{"version":"25.8.1","status":"affected","lessThanOrEqual":"25.8.1","versionType":"semver"}]}],"references":[{"url":"https://nodejs.org/en/blog/vulnerability/march-2026-security-releases"}],"metrics":[{"cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":5.3,"baseSeverity":"MEDIUM"}}],"providerMetadata":{"orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","shortName":"hackerone","dateUpdated":"2026-03-30T19:07:28.317Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-401","lang":"en","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-31T16:14:45.777607Z","id":"CVE-2026-21714","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-31T18:05:22.283Z"}}]}}