{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48706", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-22T18:47:27.754Z", "datePublished": "2026-06-26T17:38:23.581Z", "dateUpdated": "2026-06-26T19:05:30.344Z"}, "containers": {"cna": {"title": "Envoy Heap Buffer Overflow in TcpStatsdSink", "problemTypes": [{"descriptions": [{"cweId": "CWE-120", "lang": "en", "description": "CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-7q3f-gwg7-j8g4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-7q3f-gwg7-j8g4"}], "affected": [{"vendor": "envoyproxy", "product": "envoy", "versions": [{"version": ">= 1.38.0, < 1.38.3", "status": "affected"}, {"version": ">= 1.37.0, < 1.37.5", "status": "affected"}, {"version": ">= 1.36.0, < 1.36.9", "status": "affected"}, {"version": ">= 1.34.0, < 1.35.13", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-26T17:38:23.581Z"}, "descriptions": [{"lang": "en", "value": "Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.34.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, a vulnerability exists in Envoy's TCP StatsD sink (TcpStatsdSink), where the thread-local flusher buffer can be overflowed by exceptionally long statistic names (e.g., >16KiB). During formatting, TcpStatsdSink reserves a single contiguous memory slice of 16KiB (FLUSH_SLICE_SIZE_BYTES). If formatting a single metric exceeds the remaining capacity, the flusher initiates a buffer rotation but incorrectly continues to allocate another fixed 16KiB slice. If an attacker can trigger a statistic name longer than 16KiB\u2014for example, by sending an HTTP or gRPC request with an extremely long request path (:path) that is recorded by the grpc_stats filter configured with stats_for_all_methods: true\u2014the flusher will attempt to copy the metric name using memcpy operations beyond the allocated heap buffer boundaries. This leads to a heap write overflow, which can cause immediate denial-of-service (process crash) or potential remote code execution (RCE). This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3."}], "source": {"advisory": "GHSA-7q3f-gwg7-j8g4", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-26T19:05:13.902352Z", "id": "CVE-2026-48706", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"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": "2026-06-26T19:05:30.344Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48706", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-22T18:47:27.754Z", "datePublished": "2026-06-26T17:38:23.581Z", "dateUpdated": "2026-06-26T19:05:30.344Z"}, "containers": {"cna": {"title": "Envoy Heap Buffer Overflow in TcpStatsdSink", "problemTypes": [{"descriptions": [{"cweId": "CWE-120", "lang": "en", "description": "CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-7q3f-gwg7-j8g4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-7q3f-gwg7-j8g4"}], "affected": [{"vendor": "envoyproxy", "product": "envoy", "versions": [{"version": ">= 1.38.0, < 1.38.3", "status": "affected"}, {"version": ">= 1.37.0, < 1.37.5", "status": "affected"}, {"version": ">= 1.36.0, < 1.36.9", "status": "affected"}, {"version": ">= 1.34.0, < 1.35.13", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-26T17:38:23.581Z"}, "descriptions": [{"lang": "en", "value": "Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.34.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, a vulnerability exists in Envoy's TCP StatsD sink (TcpStatsdSink), where the thread-local flusher buffer can be overflowed by exceptionally long statistic names (e.g., >16KiB). During formatting, TcpStatsdSink reserves a single contiguous memory slice of 16KiB (FLUSH_SLICE_SIZE_BYTES). If formatting a single metric exceeds the remaining capacity, the flusher initiates a buffer rotation but incorrectly continues to allocate another fixed 16KiB slice. If an attacker can trigger a statistic name longer than 16KiB\u2014for example, by sending an HTTP or gRPC request with an extremely long request path (:path) that is recorded by the grpc_stats filter configured with stats_for_all_methods: true\u2014the flusher will attempt to copy the metric name using memcpy operations beyond the allocated heap buffer boundaries. This leads to a heap write overflow, which can cause immediate denial-of-service (process crash) or potential remote code execution (RCE). This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3."}], "source": {"advisory": "GHSA-7q3f-gwg7-j8g4", "discovery": "UNKNOWN"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-48706", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-26T19:05:13.902352Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-26T19:05:18.309Z"}}]}}

{}

{}

{}