{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-21714","sourceIdentifier":"support@hackerone.com","published":"2026-03-30T20:16:19.573","lastModified":"2026-08-19T13:35:56.083","vulnStatus":"Analyzed","cveTags":[],"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."},{"lang":"es","value":"Se produce una fuga de memoria en servidores HTTP/2 de Node.js cuando un cliente envía tramas WINDOW_UPDATE en el flujo 0 (a nivel de conexión) que hacen que la ventana de control de flujo exceda el valor máximo de 2³¹-1. El servidor envía correctamente una trama GOAWAY, pero el objeto Http2Session nunca se limpia.\n\nEsta vulnerabilidad afecta a los usuarios de HTTP2 en Node.js 20, 22, 24 y 25."}],"affected":[{"source":"support@hackerone.com","affectedData":[{"vendor":"nodejs","product":"node","defaultStatus":"unaffected","versions":[{"version":"20.20.1","lessThanOrEqual":"20.20.1","versionType":"semver","status":"affected"},{"version":"22.22.1","lessThanOrEqual":"22.22.1","versionType":"semver","status":"affected"},{"version":"24.14.0","lessThanOrEqual":"24.14.0","versionType":"semver","status":"affected"},{"version":"25.8.1","lessThanOrEqual":"25.8.1","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV30":[{"source":"support@hackerone.com","type":"Secondary","cvssData":{"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","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-03-31T16:14:45.777607Z","id":"CVE-2026-21714","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-401"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*","versionEndIncluding":"20.20.1","matchCriteriaId":"42C896A4-ABB4-4DF3-8F8B-320C8E8E6AA3"},{"vulnerable":true,"criteria":"cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*","versionStartIncluding":"22.0.0","versionEndIncluding":"22.22.1","matchCriteriaId":"5317F856-6549-4E7C-B6B8-811DE991E7A7"},{"vulnerable":true,"criteria":"cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*","versionStartIncluding":"24.0.0","versionEndIncluding":"24.14.0","matchCriteriaId":"DD9D3210-E42B-4584-817D-DAC5F1234234"},{"vulnerable":true,"criteria":"cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*","versionStartIncluding":"25.0.0","versionEndIncluding":"25.8.1","matchCriteriaId":"89D03065-041A-4A59-95C4-B2AE7EE36439"}]}]}],"references":[{"url":"https://nodejs.org/en/blog/vulnerability/march-2026-security-releases","source":"support@hackerone.com","tags":["Vendor Advisory"]}]}}