{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/73411?format=json","vulnerability_id":"VCID-czza-hz45-5ka6","summary":"A flaw was found in Keycloak. An authenticated user with the uma_protection role can bypass User-Managed Access (UMA) policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned resource. Consequently, the attacker gains unauthorized permissions to victim-owned resources, enabling them to obtain a Requesting Party Token (RPT) and access sensitive information or perform unauthorized actions.","aliases":[{"alias":"CVE-2026-4636"}],"fixed_packages":[],"affected_packages":[],"references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4636.json","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4636.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-4636","reference_id":"","reference_type":"","scores":[{"value":"0.00015","scoring_system":"epss","scoring_elements":"0.0319","published_at":"2026-06-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-4636"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:26.2::el9","reference_id":"cpe:/a:redhat:build_keycloak:26.2::el9","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:26.2::el9"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:26.4::el9","reference_id":"cpe:/a:redhat:build_keycloak:26.4::el9","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:26.4::el9"},{"reference_url":"https://access.redhat.com/security/cve/CVE-2026-4636","reference_id":"CVE-2026-4636","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-04-02T13:13:39Z/"}],"url":"https://access.redhat.com/security/cve/CVE-2026-4636"},{"reference_url":"https://access.redhat.com/errata/RHSA-2026:6475","reference_id":"RHSA-2026:6475","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-04-02T13:13:39Z/"}],"url":"https://access.redhat.com/errata/RHSA-2026:6475"},{"reference_url":"https://access.redhat.com/errata/RHSA-2026:6476","reference_id":"RHSA-2026:6476","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-04-02T13:13:39Z/"}],"url":"https://access.redhat.com/errata/RHSA-2026:6476"},{"reference_url":"https://access.redhat.com/errata/RHSA-2026:6477","reference_id":"RHSA-2026:6477","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-04-02T13:13:39Z/"}],"url":"https://access.redhat.com/errata/RHSA-2026:6477"},{"reference_url":"https://access.redhat.com/errata/RHSA-2026:6478","reference_id":"RHSA-2026:6478","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-04-02T13:13:39Z/"}],"url":"https://access.redhat.com/errata/RHSA-2026:6478"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2450251","reference_id":"show_bug.cgi?id=2450251","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-04-02T13:13:39Z/"}],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2450251"}],"weaknesses":[{"cwe_id":551,"name":"Incorrect Behavior Order: Authorization Before Parsing and Canonicalization","description":"If a web server does not fully parse requested URLs before it examines them for authorization, it may be possible for an attacker to bypass authorization protection."}],"exploits":[],"severity_range_score":"8.1 - 8.1","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-czza-hz45-5ka6"}