{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-44892", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-07T21:50:33.545Z", "datePublished": "2026-06-12T05:04:58.033Z", "dateUpdated": "2026-06-12T09:59:06.667Z"}, "containers": {"cna": {"title": "Netty has a Vulnerable Default Configuration Which Leads to Denial of Service via Unbounded HTTP/3 Header Size", "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-1188", "lang": "en", "description": "CWE-1188: Insecure Default Initialization of Resource", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/netty/netty/security/advisories/GHSA-c2rx-5r8w-8xr2", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/netty/netty/security/advisories/GHSA-c2rx-5r8w-8xr2"}, {"name": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final", "tags": ["x_refsource_MISC"], "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"}], "affected": [{"vendor": "netty", "product": "netty", "versions": [{"version": ">= 4.2.0.Final, < 4.2.15.Final", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-12T05:04:58.033Z"}, "descriptions": [{"lang": "en", "value": "Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the `Http3ConnectionHandler` in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify `HTTP3_SETTINGS_MAX_FIELD_SECTION_SIZE`, the implementation defaults to an unbounded limit. This insecure default configuration allows a malicious client or server to send an enormous number of headers, leading to a memory exhaustion Denial of Service via an `OutOfMemoryError`. Version 4.2.15.Final contains a patch."}], "source": {"advisory": "GHSA-c2rx-5r8w-8xr2", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-12T09:58:28.646579Z", "id": "CVE-2026-44892", "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": "2026-06-12T09:59:06.667Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-44892", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-12T09:58:28.646579Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-12T09:58:58.012Z"}}], "cna": {"title": "Netty has a Vulnerable Default Configuration Which Leads to Denial of Service via Unbounded HTTP/3 Header Size", "source": {"advisory": "GHSA-c2rx-5r8w-8xr2", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/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"}}], "affected": [{"vendor": "netty", "product": "netty", "versions": [{"status": "affected", "version": ">= 4.2.0.Final, < 4.2.15.Final"}]}], "references": [{"url": "https://github.com/netty/netty/security/advisories/GHSA-c2rx-5r8w-8xr2", "name": "https://github.com/netty/netty/security/advisories/GHSA-c2rx-5r8w-8xr2", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final", "name": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the `Http3ConnectionHandler` in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify `HTTP3_SETTINGS_MAX_FIELD_SECTION_SIZE`, the implementation defaults to an unbounded limit. This insecure default configuration allows a malicious client or server to send an enormous number of headers, leading to a memory exhaustion Denial of Service via an `OutOfMemoryError`. Version 4.2.15.Final contains a patch."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-400", "description": "CWE-400: Uncontrolled Resource Consumption"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1188", "description": "CWE-1188: Insecure Default Initialization of Resource"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-12T05:04:58.033Z"}}}, "cveMetadata": {"cveId": "CVE-2026-44892", "state": "PUBLISHED", "dateUpdated": "2026-06-12T09:59:06.667Z", "dateReserved": "2026-05-07T21:50:33.545Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-06-12T05:04:58.033Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*", "matchCriteriaId": "413D4611-A46C-4BE4-AB2F-D86282F65984", "versionEndExcluding": "4.2.15", "versionStartIncluding": "4.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the `Http3ConnectionHandler` in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify `HTTP3_SETTINGS_MAX_FIELD_SECTION_SIZE`, the implementation defaults to an unbounded limit. This insecure default configuration allows a malicious client or server to send an enormous number of headers, leading to a memory exhaustion Denial of Service via an `OutOfMemoryError`. Version 4.2.15.Final contains a patch."}], "id": "CVE-2026-44892", "lastModified": "2026-06-15T02:30:19.300", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-06-12T05:16:32.007", "references": [{"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/netty/netty/security/advisories/GHSA-c2rx-5r8w-8xr2"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-1188"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[4.2.0.Final,4.2.15.Final)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "netty", "source": "cna", "vendor": "netty"}, "product": "netty", "vendor": "netty"}], "created": "2026-06-12T06:30:17.464925+00:00", "updated": "2026-06-12T06:30:18.017623+00:00", "vendors": ["netty", "netty$PRODUCT$netty"]}