{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-47845", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-05-20T10:00:53.146Z", "datePublished": "2026-08-26T23:28:39.360Z", "dateUpdated": "2026-08-26T23:28:39.360Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-08-26T23:28:39.360Z"}, "title": "Reactor Netty HTTP Server may incorrectly evaluate proxy addresses", "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-290 Authentication Bypass by Spoofing", "type": "CWE"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "In specific scenarios, Reactor Netty HTTP Server may incorrectly evaluate the remote IP address when HAProxy Protocol is enabled. In order for this to happen, the application must be configured to use HAProxy Protocol."}]}], "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, Reactor Netty HTTP Server may incorrectly evaluate the remote IP address when HAProxy Protocol is enabled. In order for this to happen, the application must be configured to use HAProxy Protocol.\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, Reactor Netty HTTP Server may incorrectly evaluate the remote IP address when HAProxy Protocol is enabled. In order for this to happen, the application must be configured to use HAProxy Protocol.</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-2026-47845"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}}], "source": {"discovery": "UNKNOWN"}}}}

{}

{"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, Reactor Netty HTTP Server may incorrectly evaluate the remote IP address when HAProxy Protocol is enabled. In order for this to happen, the application must be configured to use HAProxy Protocol.\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-2026-47845", "lastModified": "2026-08-27T01:17:31.827", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-08-27T01:17:31.827", "references": [{"source": "[email protected]", "url": "https://spring.io/security/cve-2026-47845"}], "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": "2026-08-27T01:30:13.936815+00:00", "updated": "2026-08-27T02:30:06.752939+00:00", "vendors": ["spring", "spring$PRODUCT$reactor_netty"], "weaknesses": ["CWE-640", "CWE-285"]}