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    "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"
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                    "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."
                }
            ],
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                    "defaultStatus": "unaffected",
                    "vendor": "nodejs",
                    "product": "node",
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                            "version": "20.20.1",
                            "status": "affected",
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                            "versionType": "semver"
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                            "version": "22.22.1",
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                            "version": "24.14.0",
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                            "versionType": "semver"
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                        {
                            "version": "25.8.1",
                            "status": "affected",
                            "lessThanOrEqual": "25.8.1",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://nodejs.org/en/blog/vulnerability/march-2026-security-releases"
                }
            ],
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                        "baseScore": 5.3,
                        "baseSeverity": "MEDIUM"
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                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-401",
                                "lang": "en",
                                "description": "CWE-401 Missing Release of Memory after Effective Lifetime"
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-03-31T16:14:45.777607Z",
                                "id": "CVE-2026-21714",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
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                                        "Automatable": "yes"
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                                        "Technical Impact": "partial"
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                                "role": "CISA Coordinator",
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                "title": "CISA ADP Vulnrichment",
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