{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-47848", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-05-20T10:00:53.146Z", "datePublished": "2026-08-26T19:22:26.712Z", "dateUpdated": "2026-08-26T19:44:38.993Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-08-26T19:22:26.712Z"}, "title": "Reactor Netty WebSocket Client Leaks Credentials On Redirect", "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects."}]}], "affected": [{"vendor": "Spring", "product": "Reactor Netty", "versions": [{"status": "affected", "version": "1.3.0", "lessThanOrEqual": "1.3.6", "versionType": "custom"}, {"status": "affected", "version": "1.1.0", "lessThanOrEqual": "1.2.18", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThanOrEqual": "1.0.52", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.\nReactor Netty 1.3.0 - 1.3.6\nReactor Netty 1.1.0 - 1.2.18\nReactor Netty 1.0.52 and earlier", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.</p><p>Reactor Netty 1.3.0 - 1.3.6<br/>Reactor Netty 1.1.0 - 1.2.18<br/>Reactor Netty 1.0.52 and earlier</p>"}]}], "references": [{"url": "https://spring.io/security/cve-2026-47848"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}}], "source": {"discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-26T19:32:14.201075Z", "id": "CVE-2026-47848", "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": "2026-08-26T19:44:38.993Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-47848", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-26T19:32:14.201075Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-26T19:44:32.571Z"}}], "cna": {"title": "Reactor Netty WebSocket Client Leaks Credentials On Redirect", "source": {"discovery": "UNKNOWN"}, "impacts": [{"descriptions": [{"lang": "en", "value": "In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects."}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Spring", "product": "Reactor Netty", "versions": [{"status": "affected", "version": "1.3.0", "versionType": "custom", "lessThanOrEqual": "1.3.6"}, {"status": "affected", "version": "1.1.0", "versionType": "custom", "lessThanOrEqual": "1.2.18"}, {"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.0.52"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://spring.io/security/cve-2026-47848"}], "descriptions": [{"lang": "en", "value": "In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.\nReactor Netty 1.3.0 - 1.3.6\nReactor Netty 1.1.0 - 1.2.18\nReactor Netty 1.0.52 and earlier", "supportingMedia": [{"type": "text/html", "value": "<p>In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.</p><p>Reactor Netty 1.3.0 - 1.3.6<br/>Reactor Netty 1.1.0 - 1.2.18<br/>Reactor Netty 1.0.52 and earlier</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor"}]}], "providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-08-26T19:22:26.712Z"}}}, "cveMetadata": {"cveId": "CVE-2026-47848", "state": "PUBLISHED", "dateUpdated": "2026-08-26T19:44:38.993Z", "dateReserved": "2026-05-20T10:00:53.146Z", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "datePublished": "2026-08-26T19:22:26.712Z", "assignerShortName": "vmware"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Reactor Netty", "vendor": "Spring", "versions": [{"lessThanOrEqual": "1.3.6", "status": "affected", "version": "1.3.0", "versionType": "custom"}, {"lessThanOrEqual": "1.2.18", "status": "affected", "version": "1.1.0", "versionType": "custom"}, {"lessThanOrEqual": "1.0.52", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.\nReactor Netty 1.3.0 - 1.3.6\nReactor Netty 1.1.0 - 1.2.18\nReactor Netty 1.0.52 and earlier"}], "id": "CVE-2026-47848", "lastModified": "2026-08-26T20:17:27.070", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "[email protected]", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-47848", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-26T19:32:14.201075Z", "version": "2.0.3"}}]}, "published": "2026-08-26T20:17:27.070", "references": [{"source": "[email protected]", "url": "https://spring.io/security/cve-2026-47848"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.3.0,1.3.6]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.1.0,1.2.18]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,1.0.52]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Reactor Netty", "source": "cna", "vendor": "Spring"}, "product": "reactor_netty", "vendor": "spring"}], "created": "2026-08-26T20:45:03.795176+00:00", "updated": "2026-08-26T21:15:04.080675+00:00", "vendors": ["spring", "spring$PRODUCT$reactor_netty"], "weaknesses": ["CWE-200"]}