{"id":"CVE-2026-47845","state":"PUBLISHED","title":"Reactor Netty HTTP Server may incorrectly evaluate proxy addresses","description":"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","publishedAt":"2026-08-26T23:28:39.360Z","updatedAt":"2026-08-27T14:02:35.899Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"vmware"},"assigner":"vmware","products":["Spring Reactor Netty"],"affected":[{"vendor":"Spring","product":"Reactor Netty","defaultStatus":"unaffected","versions":[{"version":"1.3.0","status":"affected","lessThanOrEqual":"1.3.6","versionType":"custom"},{"version":"1.1.0","status":"affected","lessThanOrEqual":"1.2.18","versionType":"custom"},{"version":"0","status":"affected","lessThanOrEqual":"1.0.52","versionType":"custom"}]}],"references":["https://spring.io/security/cve-2026-47845"],"weaknesses":["CWE-290"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/47xxx/CVE-2026-47845.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47845","state":"PUBLISHED","datePublished":"2026-08-26T23:28:39.360Z","dateUpdated":"2026-08-27T14:02:35.899Z","assignerShortName":"vmware","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateReserved":"2026-05-20T10:00:53.146Z"},"containers":{"cna":{"title":"Reactor Netty HTTP Server may incorrectly evaluate proxy addresses","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"}],"affected":[{"vendor":"Spring","product":"Reactor Netty","defaultStatus":"unaffected","versions":[{"version":"1.3.0","status":"affected","lessThanOrEqual":"1.3.6","versionType":"custom"},{"version":"1.1.0","status":"affected","lessThanOrEqual":"1.2.18","versionType":"custom"},{"version":"0","status":"affected","lessThanOrEqual":"1.0.52","versionType":"custom"}]}],"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"}}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-290 Authentication Bypass by Spoofing","type":"CWE"}]}],"providerMetadata":{"shortName":"vmware","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateUpdated":"2026-08-26T23:28:39.360Z"},"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."}]}],"source":{"discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-27T14:02:16.353921Z","id":"CVE-2026-47845","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-290","type":"CWE","lang":"en","description":"CWE-290 Authentication Bypass by Spoofing"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-27T14:02:35.899Z"}}]}}}