{"document":{"aggregate_severity":{"namespace":"https://access.redhat.com/security/updates/classification/","text":"Moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright © Red Hat, Inc. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"legal_disclaimer","text":"This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.","title":"Terms of Use"}],"publisher":{"category":"vendor","contact_details":"https://access.redhat.com/security/team/contact/","issuing_authority":"Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.","name":"Red Hat Product Security","namespace":"https://www.redhat.com"},"references":[{"category":"self","summary":"Canonical URL","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41847.json"}],"title":"Spring Framework: Spring WebFlux applications: Security bypass when using Kotlin Router DSL","tracking":{"current_release_date":"2026-08-25T14:38:50+00:00","generator":{"date":"2026-08-25T14:38:50+00:00","engine":{"name":"Red Hat SDEngine","version":"5.3.16"}},"id":"CVE-2026-41847","initial_release_date":"2026-06-09T03:51:03.298000+00:00","revision_history":[{"date":"2026-06-09T03:51:03.298000+00:00","number":"1","summary":"Initial version"},{"date":"2026-08-25T13:30:45.206162+00:00","number":"2","summary":"Current version"},{"date":"2026-08-25T14:38:50+00:00","number":"3","summary":"Last generated version"}],"status":"final","version":"3"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"Red Hat Fuse 7","product":{"name":"Red Hat Fuse 7","product_id":"red_hat_fuse_7","product_identification_helper":{"cpe":"cpe:/a:redhat:jboss_fuse:7"}}}],"category":"product_family","name":"Red Hat Fuse 7"},{"category":"product_version","name":"spring-webflux","product":{"name":"spring-webflux","product_id":"spring-webflux","product_identification_helper":{"purl":"pkg:maven/org.springframework/spring-webflux"}}}],"category":"vendor","name":"Red Hat"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"spring-webflux as a component of Red Hat Fuse 7","product_id":"red_hat_fuse_7:spring-webflux"},"product_reference":"spring-webflux","relates_to_product_reference":"red_hat_fuse_7"}]},"vulnerabilities":[{"cve":"CVE-2026-41847","cwe":{"id":"CWE-551","name":"Incorrect Behavior Order: Authorization Before Parsing and Canonicalization"},"discovery_date":"2026-06-09T05:00:55.290971+00:00","ids":[{"system_name":"Red Hat Bugzilla ID","text":"2486698"}],"notes":[{"category":"description","text":"A flaw was found in Spring WebFlux applications. This vulnerability allows for a security bypass when using the Kotlin Router DSL. An attacker could exploit this to bypass security restrictions, potentially leading to unauthorized access.","title":"Vulnerability description"},{"category":"summary","text":"Spring Framework: Spring WebFlux applications: Security bypass when using Kotlin Router DSL","title":"Vulnerability summary"},{"category":"other","text":"Red Hat ships Spring WebFlux in Fuse 7. The affected version is set to AFFECTED/DEFER as the CVSS score (4.8) is below the 7.0 threshold. This flaw only affects applications using the Kotlin Router DSL.","title":"Statement"},{"category":"general","text":"The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.","title":"CVSS score applicability"}],"product_status":{"known_affected":["red_hat_fuse_7:spring-webflux"]},"references":[{"category":"self","summary":"Canonical URL","url":"https://access.redhat.com/security/cve/CVE-2026-41847"},{"category":"external","summary":"RHBZ#2486698","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2486698"},{"category":"external","summary":"https://www.cve.org/CVERecord?id=CVE-2026-41847","url":"https://www.cve.org/CVERecord?id=CVE-2026-41847"},{"category":"external","summary":"https://nvd.nist.gov/vuln/detail/CVE-2026-41847","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41847"},{"category":"external","summary":"https://spring.io/security/cve-2026-41847","url":"https://spring.io/security/cve-2026-41847"}],"release_date":"2026-06-09T03:51:03.298000+00:00","remediations":[{"category":"workaround","details":"This vulnerability only applies when using Kotlin Router DSL. Applications using Java-based routing are not affected.","product_ids":["red_hat_fuse_7:spring-webflux"]},{"category":"none_available","details":"Fix deferred","product_ids":["red_hat_fuse_7:spring-webflux"]}],"scores":[{"cvss_v3":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"products":["red_hat_fuse_7:spring-webflux"]}],"threats":[{"category":"impact","details":"Moderate","product_ids":["red_hat_fuse_7:spring-webflux"]}],"title":"Spring Framework: Spring WebFlux applications: Security bypass when using Kotlin Router DSL"}]}