{"id":"CVE-2026-1190","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-1190","summary":"Keycloak's missing timestamp validation allows attackers to extend SAML response validity periods","details":"A flaw was found in Keycloak's SAML brokering functionality. When Keycloak is configured as a client in a Security Assertion Markup Language (SAML) setup, it fails to validate the `NotOnOrAfter` timestamp within the `SubjectConfirmationData`. This allows an attacker to delay the expiration of SAML responses, potentially extending the time a response is considered valid and leading to unexpected session durations or resource consumption.","published":"2026-01-26T21:30:36Z","modified":"2026-09-10T03:49:54.362208935Z","cvss":{"score":3.1,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1190"},{"type":"WEB","url":"https://github.com/keycloak/keycloak/issues/45646"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:3947"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:3948"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-1190"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2430835"},{"type":"WEB","url":"https://github.com/keycloak/keycloak"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T03:49:54.362208935Z"}}