{"id":"CVE-2026-7307","summary":"Keycloak: keycloak: denial of service via specially crafted saml input","details":"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.","aliases":["BIT-keycloak-2026-7307","GHSA-p5mv-gj8j-xqgf"],"modified":"2026-10-08T02:30:51.571556362Z","published":"2026-05-19T10:52:24.684Z","database_specific":{"cwe_ids":["CWE-1286"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7307.json","cna_assigner":"redhat"},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://catalog.redhat.com/software/containers/"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7307.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19594"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19595"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19596"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19597"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:76128"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:76129"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:76130"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:76132"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:76134"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-7307"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7307.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-7307"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2476526"},{"type":"PACKAGE","url":"https://github.com/keycloak/keycloak"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/keycloak/keycloak","events":[{"introduced":"0"},{"fixed":"72670c0c83481ba212980174cf548aa94e41b833"},{"fixed":"458d6ad62371bd19926264380b365471cad9c6e2"},{"fixed":"0a402f777f8985eccbb07556e96d9b386275e048"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"26.2.16"},{"fixed":"26.4.12"},{"fixed":"26.6.2"}],"source":"AFFECTED_FIELD"}}],"versions":["2.4.0.Test","1.3.0.Final","1.1.0.Beta2","1.0.0.Final","1.0-final","1.0-rc-1","1.0-beta-4","1.0-beta-2","1.0-beta-1","1.0-alpha-3","1.0-alpha-2","1.0-alpha-1","1.0-alpha-1-12062013"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-7307.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}