{"cve":"CVE-2026-3009","nvd":{"published":"2026-03-05T19:16:18.193","modified":"2026-09-14T13:18:31.887","status":"Modified","description":"A security flaw in the IdentityBrokerService.performLogin endpoint of Keycloak allows authentication to proceed using an Identity Provider (IdP) even after it has been disabled by an administrator. An attacker who knows the IdP alias can reuse a previously generated login request to bypass the administrative restriction. This undermines access control enforcement and may allow unauthorized authentication through a disabled external provider.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","score":8.1},"cwes":["CWE-863"],"references":["https://access.redhat.com/errata/RHSA-2026:3947","https://access.redhat.com/errata/RHSA-2026:3948","https://access.redhat.com/security/cve/CVE-2026-3009","https://bugzilla.redhat.com/show_bug.cgi?id=2441867","https://access.redhat.com/errata/RHSA-2026:3947"],"products":["redhat:build_of_keycloak","redhat:jboss_enterprise_application_platform","redhat:jboss_enterprise_application_platform_expansion_pack","redhat:single_sign-on"],"source":"nvd","synced_at":"2026-10-19T22:25:53.701907451+00:00"},"epss":{"cve":"CVE-2026-3009","score":0.0038,"percentile":0.31981,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-m297-3jv9-m927","url":"https://osv.dev/vulnerability/GHSA-m297-3jv9-m927","summary":"Keycloak allows authentication using an Identity Provider (IdP) even after it has been disabled by an administrator","modified":"2026-08-26T01:11:25.896028927Z","packages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","ranges":["<26.5.5"],"fixed":["26.5.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}