{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42398", "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a", "state": "PUBLISHED", "assignerShortName": "elastic", "dateReserved": "2026-04-27T10:14:34.318Z", "datePublished": "2026-05-28T19:47:53.440Z", "dateUpdated": "2026-05-28T19:47:53.440Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Kibana", "vendor": "Elastic", "versions": [{"lessThanOrEqual": "9.3.1", "status": "affected", "version": "9.3.0", "versionType": "semver"}, {"lessThanOrEqual": "9.2.7", "status": "affected", "version": "9.0.0", "versionType": "semver"}]}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector management privileges to bypass the operator-configured connection allowlist. By configuring a Webhook connector with a crafted target, an attacker can cause Kibana to issue outbound requests to destinations that the egress restriction controls were intended to block.</p>"}], "value": "Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector management privileges to bypass the operator-configured connection allowlist. By configuring a Webhook connector with a crafted target, an attacker can cause Kibana to issue outbound requests to destinations that the egress restriction controls were intended to block."}], "impacts": [{"capecId": "CAPEC-664", "descriptions": [{"lang": "en", "value": "CAPEC-664 Server Side Request Forgery"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseSeverity": "HIGH", "baseScore": 7.7, "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "privilegesRequired": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-918", "description": "CWE-918 Server-Side Request Forgery (SSRF)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a", "shortName": "elastic", "dateUpdated": "2026-05-28T19:47:53.440Z"}, "references": [{"url": "https://discuss.elastic.co/t/kibana-9-2-8-and-9-3-2-security-update-esa-2026-37/386557"}], "source": {"discovery": "Elastic"}, "title": "Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access", "x_generator": {"engine": "Elastic CVE Publisher 0.0.1"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector management privileges to bypass the operator-configured connection allowlist. By configuring a Webhook connector with a crafted target, an attacker can cause Kibana to issue outbound requests to destinations that the egress restriction controls were intended to block."}], "id": "CVE-2026-42398", "lastModified": "2026-05-28T21:16:30.180", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 4.0, "source": "security@elastic.co", "type": "Secondary"}]}, "published": "2026-05-28T21:16:30.180", "references": [{"source": "security@elastic.co", "url": "https://discuss.elastic.co/t/kibana-9-2-8-and-9-3-2-security-update-esa-2026-37/386557"}], "sourceIdentifier": "security@elastic.co", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "security@elastic.co", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.3.0,9.3.1]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.0.0,9.2.7]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Kibana", "source": "cna", "vendor": "Elastic"}, "product": "kibana", "vendor": "elastic"}], "created": "2026-05-28T21:30:26.167428+00:00", "updated": "2026-05-28T21:30:26.167462+00:00", "vendors": ["elastic", "elastic$PRODUCT$kibana"]}