{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-15738", "assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "state": "PUBLISHED", "assignerShortName": "AMZN", "dateReserved": "2026-07-14T14:02:30.277Z", "datePublished": "2026-07-14T20:19:23.721Z", "dateUpdated": "2026-07-14T20:19:23.721Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "shortName": "AMZN", "dateUpdated": "2026-07-14T20:19:23.721Z"}, "title": "Cross-namespace traffic interception via incorrect route precedence ordering in AWS Load Balancer Controller", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-653", "description": "CWE-653 Improper isolation or compartmentalization", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-154", "descriptions": [{"lang": "en", "value": "CAPEC-154 Resource Location Spoofing"}]}], "affected": [{"vendor": "Amazon", "product": "aws-load-balancer-controller", "versions": [{"status": "affected", "version": "0", "lessThan": "3.4.2", "versionType": "custom"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:amazon:aws-load-balancer-controller:*:*:*:*:*:*:*:*", "versionStartIncluding": "0", "versionEndExcluding": "3.4.2"}]}]}], "descriptions": [{"lang": "en", "value": "Incorrect behavior order in the Gateway API listener-rule generation in Amazon AWS Load Balancer Controller before 3.4.2 might allow an authenticated remote user to intercept, spoof, or deny another namespace's gRPC traffic on a shared Gateway via a crafted HTTPRoute resource.\n\n\n\nTo mitigate this issue, users should upgrade to version 3.4.2.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Incorrect behavior order in the Gateway API listener-rule generation in Amazon AWS Load Balancer Controller before 3.4.2 might allow an authenticated remote user to intercept, spoof, or deny another namespace's gRPC traffic on a shared Gateway via a crafted HTTPRoute resource.</p><p>To mitigate this issue, users should upgrade to version 3.4.2.</p>"}]}], "references": [{"url": "https://github.com/kubernetes-sigs/aws-load-balancer-controller/releases/tag/v3.4.2", "tags": ["release-notes"]}, {"url": "https://aws.amazon.com/security/security-bulletins/2026-055-aws/", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 5.8, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 8.5, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}}}

{}

{}

{}

{}