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This issue occurs due to improperly enforcing token types when validating signatures locally. This could allow an authenticated attacker to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.","status":"published","published":"2024-11-17T10:19:03.717Z","modified":"2024-11-17T16:18:51.475Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-273"],"updated_at":"2026-11-02T14:35:35.580545Z"}],"euvd":[{"id":"EUVD-2024-1142","description":"A flaw was found in Keycloak. This issue occurs due to improperly enforcing token types when validating signatures locally. This could allow an authenticated attacker to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.","status":"published","published":"2024-11-17T10:19:03Z","modified":"2024-11-17T16:18:51Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-03T00:04:57.661321Z"}],"ghsa":[{"id":"GHSA-7fpj-9hr8-28vh","title":"Keycloak vulnerable to impersonation via logout token exchange","description":"Keycloak was found to not properly enforce token types when validating signatures locally. An authenticated attacker could use this flaw to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.\n\n","status":"published","published":"2024-04-17T18:25:59Z","modified":"2024-11-18T17:28:40Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-273","CWE-284","CWE-287","CWE-290","CWE-347"],"updated_at":"2026-11-02T14:38:20.833758Z"}],"nvd":[{"id":"CVE-2023-0657","description":"A flaw was found in Keycloak. This issue occurs due to improperly enforcing token types when validating signatures locally. This could allow an authenticated attacker to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.","status":"published","published":"2024-11-17T11:15:05.3Z","modified":"2026-06-17T05:26:01.56Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-273"],"updated_at":"2026-11-02T14:09:19.052418Z"}],"osv":[{"id":"CVE-2023-0657","title":"Keycloak: impersonation via logout token exchange","description":"A flaw was found in Keycloak. This issue occurs due to improperly enforcing token types when validating signatures locally. This could allow an authenticated attacker to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.","status":"published","published":"2024-11-17T10:19:03.717Z","modified":"2026-10-28T02:30:29.160086064Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-273"],"updated_at":"2026-11-02T15:44:29.487253Z"},{"id":"GHSA-7fpj-9hr8-28vh","title":"Keycloak vulnerable to impersonation via logout token exchange","description":"Keycloak was found to not properly enforce token types when validating signatures locally. An authenticated attacker could use this flaw to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.\n\n","status":"published","published":"2024-04-17T18:25:59Z","modified":"2026-09-10T03:50:12.435650647Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-273","CWE-284","CWE-287","CWE-290","CWE-347"],"updated_at":"2026-11-02T15:46:41.002603Z"}]}}