{"id":"CVE-2022-4137","aliases":["EUVD-2023-0968","GHSA-9hhc-pj4w-w5rv","RHSA-2023:1043","RHSA-2023:1044","RHSA-2023:1045"],"status":"published","title":"Keycloak: reflected xss attack","description":"A reflected cross-site scripting (XSS) vulnerability was found in the 'oob' OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page. This flaw requires a user or administrator to interact with a link in order to be vulnerable. 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This may compromise user details, allowing it to be changed or collected by an attacker.","status":"published","published":"2023-09-25T19:17:55Z","modified":"2024-08-03T01:27:54Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T03:25:56.994006Z"}],"ghsa":[{"id":"GHSA-9hhc-pj4w-w5rv","title":"Keycloak Cross-site Scripting on OpenID connect login service","description":"A reflected cross-site scripting (XSS) vulnerability was found in the `oob` OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page.","status":"published","published":"2023-03-01T17:38:56Z","modified":"2023-11-08T05:05:00Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-79","CWE-116"],"updated_at":"2026-11-02T14:37:16.721714Z"}],"nvd":[{"id":"CVE-2022-4137","description":"A reflected cross-site scripting (XSS) vulnerability was found in the 'oob' OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page. This flaw requires a user or administrator to interact with a link in order to be vulnerable. This may compromise user details, allowing it to be changed or collected by an attacker.","status":"published","published":"2023-09-25T20:15:09.897Z","modified":"2026-06-17T05:20:03.403Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-81","CWE-79"],"updated_at":"2026-11-02T14:07:39.811118Z"}],"osv":[{"id":"GHSA-9hhc-pj4w-w5rv","title":"Keycloak Cross-site Scripting on OpenID connect login service","description":"A reflected cross-site scripting (XSS) vulnerability was found in the `oob` OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page.","status":"published","published":"2023-03-01T17:38:56Z","modified":"2024-02-16T08:10:52.470433Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-116","CWE-79"],"updated_at":"2026-11-02T15:46:43.875515Z"},{"id":"RHSA-2023:1043","title":"Red Hat Security Advisory: Red Hat Single Sign-On 7.6.2 security update on RHEL 7","status":"published","published":"2024-09-30T16:32:34Z","modified":"2026-10-13T10:03:51Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:53:10.611604Z"},{"id":"RHSA-2023:1044","title":"Red Hat Security Advisory: Red Hat Single Sign-On 7.6.2 security update on RHEL 8","status":"published","published":"2024-09-30T16:32:14Z","modified":"2026-10-13T10:03:52Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:53:10.611604Z"},{"id":"RHSA-2023:1045","title":"Red Hat Security Advisory: Red Hat Single Sign-On 7.6.2 security update on RHEL 9","status":"published","published":"2024-09-30T16:31:49Z","modified":"2026-10-13T10:03:53Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:53:10.611604Z"}]}}