{"cve":"CVE-2026-9791","nvd":{"published":"2026-05-28T05:16:39.977","modified":"2026-10-26T12:10:00.130","status":"Modified","description":"A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in tokens, even after an administrator has explicitly disabled the Organizations feature, potentially leading to incorrect authorization decisions by resource servers.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":["CWE-863"],"references":["https://access.redhat.com/errata/RHSA-2026:25097","https://access.redhat.com/errata/RHSA-2026:25098","https://access.redhat.com/errata/RHSA-2026:30049","https://access.redhat.com/errata/RHSA-2026:30050","https://access.redhat.com/security/cve/CVE-2026-9791"],"products":["redhat:build_of_keycloak"],"source":"nvd","synced_at":"2026-10-26T12:35:18.182177120+00:00"},"epss":{"cve":"CVE-2026-9791","score":0.00215,"percentile":0.11753,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-4q93-v92x-p89f","url":"https://osv.dev/vulnerability/GHSA-4q93-v92x-p89f","summary":"Keycloak Vulnerable to Incorrect Authorization","modified":"2026-07-01T21:41:29.455907Z","packages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-server-spi-private","purl":"pkg:maven/org.keycloak/keycloak-server-spi-private","ranges":[">=26.5.0 <26.6.3"],"fixed":["26.6.3"]},{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","ranges":[">=26.5.0 <26.6.3"],"fixed":["26.6.3"]},{"ecosystem":"Maven","name":"org.keycloak:keycloak-server-spi-private","purl":"pkg:maven/org.keycloak/keycloak-server-spi-private","ranges":["<=26.4.7"],"fixed":[]},{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","ranges":["<=26.4.7"],"fixed":[]}]}],"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."]}