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The vulnerability of the Keycloak identity and access management software lies in improper behavior patterns, allowing unauthorized users to gain unauthorized access to confidential information.
🗓️ 28 Apr 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 1 Views
| Reporter | Title | Published | Views | Family All 26 |
|---|---|---|---|---|
 | CVE-2026-4636 | 2 Apr 202612:45 | – | attackerkb |
 | April Linux Patch Wednesday | 22 Apr 202616:00 | – | avleonov |
 | CVE-2026-4636 vulnerabilities | 5 Apr 202601:17 | – | cgr |
 | CVE-2026-4636 | 2 Apr 202614:40 | – | circl |
 | Keycloak 安全漏洞 | 2 Apr 202600:00 | – | cnnvd |
 | CVE-2026-4636 | 2 Apr 202612:45 | – | cve |
 | CVE-2026-4636 Keycloak: keycloak: uma policy bypass allows authenticated users to gain unauthorized access to victim-owned resources. | 2 Apr 202612:45 | – | cvelist |
 | EUVD-2026-18213 | 2 Apr 202615:31 | – | euvd |
 | Keycloak: UMA Policy Resource Injection Allows Unauthorized Cross-User Permission Grants | 2 Apr 202615:31 | – | github |
 | CVE-2026-4636 | 2 Apr 202613:16 | – | nvd |
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15 May 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 38.1
CVSS 28.5
EPSS0.00346