{"id":"CVE-2026-7307","revision":"f7999155270d4285b7c1bf53fa42f486","records":[{"revision":"f7999155270d4285b7c1bf53fa42f486","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-7307","aliases":[],"title":"Keycloak: keycloak: denial of service via specially crafted saml input","description":"A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.","state":0,"publishedAt":"2026-05-19T10:52:24.684+00:00","modifiedAt":"2026-10-06T16:43:47.49+00:00","affected":[{"ecosystem":"https://github.com/keycloak/keycloak","name":"keycloak","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"26.2.16\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"26.4.12\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"26.6.2\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageName\": \"keycloak\",\n                    \"collectionURL\": \"https://github.com/keycloak/keycloak\",\n                    \"defaultStatus\": \"unaffected\"\n                }"},{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"rhbk/keycloak-operator-bundle","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat build of Keycloak 26.2\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"rhbk/keycloak-operator-bundle\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n       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\"version\": \"26.2-21\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:build_keycloak:26.2::el9\"\n                    ]\n                }"},{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"rhbk/keycloak-rhel9-operator","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat build of Keycloak 26.2\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"rhbk/keycloak-rhel9-operator\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"26.2-21\",\n            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\"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:red_hat_single_sign_on:7.6::el7\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"rh-sso7-keycloak","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Single Sign-On 7.6 for RHEL 8\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"rh-sso7-keycloak\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:18.0.20-1.redhat_00001.1.el8sso\",\n                         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3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://access.redhat.com/errata/RHSA-2026:19594","https://access.redhat.com/errata/RHSA-2026:19595","https://access.redhat.com/errata/RHSA-2026:19596","https://access.redhat.com/errata/RHSA-2026:19597","https://access.redhat.com/errata/RHSA-2026:76128","https://access.redhat.com/errata/RHSA-2026:76129","https://access.redhat.com/errata/RHSA-2026:76130","https://access.redhat.com/errata/RHSA-2026:76132","https://access.redhat.com/errata/RHSA-2026:76134","https://access.redhat.com/security/cve/CVE-2026-7307","https://bugzilla.redhat.com/show_bug.cgi?id=2476526"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-7307","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-7307","identifiers":["CVE-2026-7307"]},"retained":false,"historicalAffected":[]}],"coverage":[]}