{"id":"CVE-2026-41847","state":"PUBLISHED","title":"Spring Framework Security Filter Bypass in WebFlux Kotlin Router DSL","description":"Spring WebFlux applications may be vulnerable to a security bypass when using the Kotlin Router DSL.\n\nAffected versions:\nSpring Framework 5.3.0 through 5.3.48.","publishedAt":"2026-06-09T03:51:03.298Z","updatedAt":"2026-06-09T13:33:56.075Z","severity":{"score":4.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","source":"vmware"},"assigner":"vmware","products":["Spring Spring Framework"],"affected":[{"vendor":"Spring","product":"Spring Framework","defaultStatus":"unaffected","versions":[{"version":"5.3.0","status":"affected","lessThan":"5.3.49","versionType":"custom"}]}],"references":["https://spring.io/security/cve-2026-41847"],"weaknesses":["CWE-284"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/41xxx/CVE-2026-41847.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41847","state":"PUBLISHED","datePublished":"2026-06-09T03:51:03.298Z","dateUpdated":"2026-06-09T13:33:56.075Z","assignerShortName":"vmware","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateReserved":"2026-04-22T06:22:08.200Z"},"containers":{"cna":{"title":"Spring Framework Security Filter Bypass in WebFlux Kotlin Router DSL","descriptions":[{"lang":"en","value":"Spring WebFlux applications may be vulnerable to a security bypass when using the Kotlin Router DSL.\n\nAffected versions:\nSpring Framework 5.3.0 through 5.3.48."}],"affected":[{"vendor":"Spring","product":"Spring Framework","defaultStatus":"unaffected","versions":[{"version":"5.3.0","status":"affected","lessThan":"5.3.49","versionType":"custom"}]}],"references":[{"url":"https://spring.io/security/cve-2026-41847"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","lang":"en","description":"CWE-284: Improper Access Control","type":"CWE"}]}],"providerMetadata":{"shortName":"vmware","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateUpdated":"2026-06-09T03:51:03.298Z"},"impacts":[{"descriptions":[{"lang":"en","value":"Security-related modifications applied to a ServerRequest by a filter in the WebFlux Kotlin Router DSL are silently discarded, causing security enrichment to have no effect and allowing security bypass."}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-09T13:33:48.567067Z","id":"CVE-2026-41847","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-09T13:33:56.075Z"}}]}}}