{"id":"CVE-2026-110931","aliases":["EUVD-2026-117566","GHSA-w9c8-6pxq-5xf8"],"status":"published","title":"Keycloak-services: keycloak-services: unauthenticated jvm termination via saml 1.1 authoritybinding parsing loop","description":"A flaw was found in the SAML 1.1 assertion parser of Keycloak, a tool used for identity and access management. The issue occurs when the parser handles a specific element called AuthorityBinding within an authentication statement. Due to an incomplete fix for a previous vulnerability, the parser can enter an infinite loop that consumes all available memory, causing the entire Keycloak service to crash and become unavailable to users.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00655,"percentile":0.51879,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-835"],"published":"2026-11-05T16:04:53Z","modified":"2026-11-06T17:12:50Z","products":[{"vendor":"red hat","product":"red hat build of keycloak 26.4"},{"vendor":"red hat","product":"red hat build of keycloak 26.4.17"},{"vendor":"red hat","product":"red hat build of keycloak 26.6"},{"vendor":"red hat","product":"red hat build of keycloak 26.6.8"},{"vendor":"red hat","product":"red hat single sign-on 7"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:95759","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:95760","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:95761","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:95762","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-110931","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2553047","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110931"},{"url":"https://github.com/advisories/GHSA-w9c8-6pxq-5xf8"}],"sources":{"cve":[{"id":"CVE-2026-110931","title":"Keycloak-services: keycloak-services: unauthenticated jvm termination via saml 1.1 authoritybinding parsing loop","description":"A flaw was found in the SAML 1.1 assertion parser of Keycloak, a tool used for identity and access management. The issue occurs when the parser handles a specific element called AuthorityBinding within an authentication statement. Due to an incomplete fix for a previous vulnerability, the parser can enter an infinite loop that consumes all available memory, causing the entire Keycloak service to crash and become unavailable to users.","status":"published","published":"2026-11-05T16:04:53.045Z","modified":"2026-11-09T17:17:37.154Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-835"],"updated_at":"2026-11-09T19:34:28.960398Z"}],"euvd":[{"id":"EUVD-2026-117566","description":"A flaw was found in the SAML 1.1 assertion parser of Keycloak, a tool used for identity and access management. The issue occurs when the parser handles a specific element called AuthorityBinding within an authentication statement. Due to an incomplete fix for a previous vulnerability, the parser can enter an infinite loop that consumes all available memory, causing the entire Keycloak service to crash and become unavailable to users.","status":"published","published":"2026-11-05T16:04:53Z","modified":"2026-11-09T17:17:37Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-06T21:07:00.111123Z"}],"ghsa":[{"id":"GHSA-w9c8-6pxq-5xf8","title":"A flaw was found in the SAML 1.1 assertion parser of Keycloak, a tool used for identity and...","description":"A flaw was found in the SAML 1.1 assertion parser of Keycloak, a tool used for identity and access management. The issue occurs when the parser handles a specific element called AuthorityBinding within an authentication statement. Due to an incomplete fix for a previous vulnerability, the parser can enter an infinite loop that consumes all available memory, causing the entire Keycloak service to crash and become unavailable to users.","status":"published","published":"2026-11-05T18:33:14Z","modified":"2026-11-06T18:36:10Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-835"],"updated_at":"2026-11-06T19:01:28.733273Z"}],"nvd":[{"id":"CVE-2026-110931","description":"A flaw was found in the SAML 1.1 assertion parser of Keycloak, a tool used for identity and access management. The issue occurs when the parser handles a specific element called AuthorityBinding within an authentication statement. Due to an incomplete fix for a previous vulnerability, the parser can enter an infinite loop that consumes all available memory, causing the entire Keycloak service to crash and become unavailable to users.","status":"published","published":"2026-11-05T17:17:37.28Z","modified":"2026-11-09T18:17:19.82Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-835"],"updated_at":"2026-11-09T20:15:34.274131Z"}]}}