{"cve":"CVE-2026-37981","nvd":{"published":"2026-05-19T12:16:18.463","modified":"2026-10-26T13:10:00.140","status":"Analyzed","description":"A flaw was found in Keycloak. A broken access control vulnerability in the Account Resources user lookup endpoint allows a remote authenticated user, who owns at least one User-Managed Access (UMA) resource, to enumerate and harvest personally identifiable information (PII) for all realm users. By sending crafted requests with arbitrary usernames or email values, the endpoint returns full profile objects for unrelated users. This leads to broad profile-level information disclosure.","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-1220"],"references":["https://access.redhat.com/errata/RHSA-2026:19596","https://access.redhat.com/errata/RHSA-2026:19597","https://access.redhat.com/security/cve/CVE-2026-37981","https://bugzilla.redhat.com/show_bug.cgi?id=2455326"],"products":["redhat:build_of_keycloak"],"source":"nvd","synced_at":"2026-10-26T13:39:24.642594360+00:00"},"epss":{"cve":"CVE-2026-37981","score":0.0037,"percentile":0.30731,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-933f-rg6j-f46p","url":"https://osv.dev/vulnerability/GHSA-933f-rg6j-f46p","summary":"Keycloak Account Resources user lookup contains broken access control","modified":"2026-08-26T01:11:37.911830410Z","packages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","ranges":["<26.4.12"],"fixed":["26.4.12"]},{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","ranges":[">=26.5.0 <26.6.2"],"fixed":["26.6.2"]}]}],"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."]}