{"id":"CVE-2023-0264","aliases":[],"url":"https://o3.security/vulnerability/CVE-2023-0264","summary":"A flaw was found in Keycloaks OpenID Connect user authentication, which may incorrectly authenticate requests. An authenticated attacker who could obtain information from a user request…","details":"A flaw was found in Keycloaks OpenID Connect user authentication, which may incorrectly authenticate requests. An authenticated attacker who could obtain information from a user request within the same realm could use that data to impersonate the victim and generate new session tokens. This issue could impact confidentiality, integrity, and availability.","published":"2023-08-04T18:15:11.090","modified":"2026-06-17T05:25:09.470","cvss":{"score":5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":2,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-0264"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-0264"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-06-17T05:25:09.470"}}