{"items":[{"id":"NVI-00017698","kind":"vulnerability","title":"Keycloak has an Out-of-bounds Read","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cpf7-j4cf-vqx4","CVE-2026-9803"],"plain_summary":"GitHub lists this reviewed advisory for org.keycloak:keycloak-services, org.keycloak:keycloak-services. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4a1d3d009e178fc92d6174d7a1d0e51b"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-01T21:27:38.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4a1d3d009e178fc92d6174d7a1d0e51b"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-4a1d3d009e178fc92d6174d7a1d0e51b","url":"https://github.com/advisories/GHSA-cpf7-j4cf-vqx4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-cpf7-j4cf-vqx4","publisher":"GitHub Advisory Database","observed_at":"2026-11-05T03:47:42.887Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4a1d3d009e178fc92d6174d7a1d0e51b"],"technology":"org.keycloak:keycloak-services","known_exclusions":[],"conditions_summary":"A flaw was found in Keycloak's ClientRegistrationAuth component. A remote unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with a malformed 'Authorization: Bearer' header to any client registration endpoint. This can lead to an ArrayIndexOutOfBoundsException, causing the server to return an HTTP 500 error and resulting in a Denial of Service (DoS) for the affected service.","public_affected_ranges":["<= 26.4.7"]},{"certainty":"source_listed","source_ids":["sr-4a1d3d009e178fc92d6174d7a1d0e51b"],"technology":"org.keycloak:keycloak-services","known_exclusions":[],"conditions_summary":"A flaw was found in Keycloak's ClientRegistrationAuth component. A remote unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with a malformed 'Authorization: Bearer' header to any client registration endpoint. This can lead to an ArrayIndexOutOfBoundsException, causing the server to return an HTTP 500 error and resulting in a Denial of Service (DoS) for the affected service.","public_affected_ranges":[">= 26.5.0, < 26.6.3"]}],"null_published_at":"2026-11-05T19:10:21.453Z","source_updated_at":"2026-07-01T21:27:38.000Z","source_disclosed_at":"2026-05-28T06:31:10.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-05T03:47:42.887Z"}],"next_cursor":null,"snapshot_revision":"42594"}