CVE-2026-56848

{"id": "CVE-2026-56848", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-56848", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-04T17:35:44.952267Z"}}], "cvssMetricV30": [{"type": "Secondary", "source": "support@hackerone.com", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "support@hackerone.com", "affectedData": [{"vendor": "nodejs", "product": "node", "versions": [{"status": "affected", "version": "26.5.0", "versionType": "semver", "lessThanOrEqual": "26.5.0"}, {"status": "affected", "version": "24.18.0", "versionType": "semver", "lessThanOrEqual": "24.18.0"}, {"status": "affected", "version": "22.23.1", "versionType": "semver", "lessThanOrEqual": "22.23.1"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-04T17:16:56.207", "references": [{"url": "https://nodejs.org/en/blog/vulnerability/july-2026-security-releases", "source": "support@hackerone.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "support@hackerone.com", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "A flaw in Node.js HTTP/2 handling allows `nghttp2_session_mem_send()` to be called re-entrantly while `nghttp2_session_mem_recv()` is executing, resulting in a heap-use-after-free.\r\n\r\nThis vulnerability affects Node.js **26.x**, **24.x**, and **22.x**."}], "lastModified": "2026-09-03T17:02:54.670", "sourceIdentifier": "support@hackerone.com"}