CVE-2026-48497

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48497", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-21T15:33:08.292Z", "datePublished": "2026-06-26T17:32:58.310Z", "dateUpdated": "2026-06-26T18:32:51.626Z"}, "containers": {"cna": {"title": "Envoy: Abnormal process termination in DNS UDP filter", "problemTypes": [{"descriptions": [{"cweId": "CWE-480", "lang": "en", "description": "CWE-480: Use of Incorrect Operator", "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-j6g2-wf95-q66q", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-j6g2-wf95-q66q"}], "affected": [{"vendor": "envoyproxy", "product": "envoy", "versions": [{"version": ">= 1.38.0, < 1.38.1", "status": "affected"}, {"version": ">= 1.37.0, < 1.37.3", "status": "affected"}, {"version": ">= 1.36.0, < 1.36.7", "status": "affected"}, {"version": "< 1.35.11", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-26T17:32:58.310Z"}, "descriptions": [{"lang": "en", "value": "Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, in cases where UDP DNS filter is configured with local resolution containing a name with the length of 255 octets or remote resolution for a name of 255 octets long can complete successfully, a query with such name will result in abnormal process termination. The abnormal process termination is triggered by an invalid runtime precondition that the query name is strictly less than 255 octets, contradicting DNS specification rfc1035#section-2.3.4 that the name can be 255 or less octets. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1."}], "source": {"advisory": "GHSA-j6g2-wf95-q66q", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-26T18:32:39.500724Z", "id": "CVE-2026-48497", "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": "2026-06-26T18:32:51.626Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-48497", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-26T18:32:39.500724Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-26T18:32:47.045Z"}}], "cna": {"title": "Envoy: Abnormal process termination in DNS UDP filter", "source": {"advisory": "GHSA-j6g2-wf95-q66q", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "envoyproxy", "product": "envoy", "versions": [{"status": "affected", "version": ">= 1.38.0, < 1.38.1"}, {"status": "affected", "version": ">= 1.37.0, < 1.37.3"}, {"status": "affected", "version": ">= 1.36.0, < 1.36.7"}, {"status": "affected", "version": "< 1.35.11"}]}], "references": [{"url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-j6g2-wf95-q66q", "name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-j6g2-wf95-q66q", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, in cases where UDP DNS filter is configured with local resolution containing a name with the length of 255 octets or remote resolution for a name of 255 octets long can complete successfully, a query with such name will result in abnormal process termination. The abnormal process termination is triggered by an invalid runtime precondition that the query name is strictly less than 255 octets, contradicting DNS specification rfc1035#section-2.3.4 that the name can be 255 or less octets. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-480", "description": "CWE-480: Use of Incorrect Operator"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-26T17:32:58.310Z"}}}, "cveMetadata": {"cveId": "CVE-2026-48497", "state": "PUBLISHED", "dateUpdated": "2026-06-26T18:32:51.626Z", "dateReserved": "2026-05-21T15:33:08.292Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-06-26T17:32:58.310Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "envoy", "vendor": "envoyproxy", "versions": [{"status": "affected", "version": ">= 1.38.0, < 1.38.1"}, {"status": "affected", "version": ">= 1.37.0, < 1.37.3"}, {"status": "affected", "version": ">= 1.36.0, < 1.36.7"}, {"status": "affected", "version": "< 1.35.11"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "3327F1D2-8A35-41E5-B720-06528D0856C0", "versionEndExcluding": "1.35.13", "vulnerable": true}, {"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "B1146A14-3C49-48C3-BC2A-1BBB202EBD84", "versionEndExcluding": "1.36.9", "versionStartIncluding": "1.36.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "2057BF79-00D1-4154-9DC0-3F278C72F4E1", "versionEndExcluding": "1.37.5", "versionStartIncluding": "1.37.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "2A218AD4-BF4B-46EA-96D7-3B25B7E71AC8", "versionEndExcluding": "1.38.3", "versionStartIncluding": "1.38.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, in cases where UDP DNS filter is configured with local resolution containing a name with the length of 255 octets or remote resolution for a name of 255 octets long can complete successfully, a query with such name will result in abnormal process termination. The abnormal process termination is triggered by an invalid runtime precondition that the query name is strictly less than 255 octets, contradicting DNS specification rfc1035#section-2.3.4 that the name can be 255 or less octets. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1."}, {"lang": "es", "value": "Envoy es un proxy de borde y de servicio de c\u00f3digo abierto dise\u00f1ado para aplicaciones nativas de la nube. Antes de 1.35.11, 1.36.7, 1.37.3 y 1.38.1, en casos donde el filtro DNS UDP est\u00e1 configurado con resoluci\u00f3n local que contiene un nombre con una longitud de 255 octetos o resoluci\u00f3n remota para un nombre de 255 octetos de longitud puede completarse con \u00e9xito, una consulta con dicho nombre resultar\u00e1 en una terminaci\u00f3n anormal del proceso. La terminaci\u00f3n anormal del proceso es desencadenada por una precondici\u00f3n de tiempo de ejecuci\u00f3n inv\u00e1lida de que el nombre de la consulta es estrictamente menor a 255 octetos, contradiciendo la especificaci\u00f3n DNS rfc1035#section-2.3.4 de que el nombre puede ser de 255 octetos o menos. Esta vulnerabilidad est\u00e1 corregida en 1.35.11, 1.36.7, 1.37.3 y 1.38.1."}], "id": "CVE-2026-48497", "lastModified": "2026-10-25T17:10:00.197", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"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": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48497", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-26T18:32:39.500724Z", "version": "2.0.3"}}]}, "published": "2026-06-26T18:16:59.897", "references": [{"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-j6g2-wf95-q66q"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-480"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.38.0,1.38.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.37.0,1.37.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.36.0,1.36.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.35.11)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "envoy", "source": "cna", "vendor": "envoyproxy"}, "product": "envoy", "vendor": "envoyproxy"}], "created": "2026-06-26T20:00:05.442629+00:00", "updated": "2026-06-26T22:45:05.689387+00:00", "vendors": ["envoyproxy", "envoyproxy$PRODUCT$envoy"]}