{"id":"CVE-2026-4628","revision":"26f778612c0344c4b54b28d3535592d1","records":[{"revision":"26f778612c0344c4b54b28d3535592d1","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-4628","aliases":[],"title":"Keycloak: org.keycloak.authorization: keycloak: unauthorized resource modification due to improper access control","description":"A flaw was found in Keycloak. An improper Access Control vulnerability in Keycloak’s User-Managed Access (UMA) resource_set endpoint allows attackers with valid credentials to bypass the allowRemoteResourceManagement=false restriction. This occurs due to incomplete enforcement of access control checks on PUT operations to the resource_set endpoint. This issue enables unauthorized modification of protected resources, impacting data integrity.","state":0,"publishedAt":"2026-03-23T08:09:22.123+00:00","modifiedAt":"2026-10-22T20:38:05.995+00:00","affected":[{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"Red Hat build of Keycloak 26.4.12","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat build of Keycloak 26.4.12\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"cpes\": [\n                        \"cpe:/a:redhat:build_keycloak:26.4::el9\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"keycloak-services","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Build of Keycloak\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"keycloak-services\",\n                    \"defaultStatus\": \"affected\",\n                    \"cpes\": [\n                        \"cpe:/a:redhat:build_keycloak:\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","name":"keycloak-services","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat JBoss Enterprise Application Platform 8\",\n                    \"collectionURL\": \"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html\",\n                    \"packageName\": \"keycloak-services\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"cpes\": [\n                        \"cpe:/a:redhat:jboss_enterprise_application_platform:8\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","name":"keycloak-services","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat JBoss Enterprise Application Platform Expansion Pack\",\n                    \"collectionURL\": \"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html\",\n                    \"packageName\": \"keycloak-services\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"cpes\": [\n                        \"cpe:/a:redhat:jbosseapxp\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"keycloak-services","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Single Sign-On 7\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"keycloak-services\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"cpes\": [\n                        \"cpe:/a:redhat:red_hat_single_sign_on:7\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","score":4.3,"severity":"MEDIUM"}],"references":["https://access.redhat.com/errata/RHSA-2026:19596","https://access.redhat.com/security/cve/CVE-2026-4628","https://bugzilla.redhat.com/show_bug.cgi?id=2450240"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-4628","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-4628","identifiers":["CVE-2026-4628"]},"retained":false,"historicalAffected":[]}],"coverage":[]}