3.7
CVE-2026-18206
- EPSS 0.2%
- Veröffentlicht 31.07.2026 07:08:29
- Zuletzt bearbeitet 07.08.2026 14:54:56
- CVE-Watchlists
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Keycloak-services: keycloak-services: client policy source-host wildcard domain matching bypass
A flaw was found in the keycloak-services component of Keycloak, which provides identity and access management services. The issue occurs when a realm administrator uses a wildcard domain (like *.example.com) to restrict which hosts can register or update clients. Due to improper validation, the system accepts any hostname that ends with the specified domain suffix, even if it is not a legitimate subdomain. An attacker who can control the reverse DNS of their connection can bypass these host-based restrictions, potentially allowing unauthorized client modifications.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Redhat ≫ Build Of Keycloak Version- SwEdition-
VulnDex Vulnerability Enrichment
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Login
Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.2% | 0.101 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| NIST | 3.7 | 2.2 | 1.4 |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
|
| RedHat | 3.7 | 2.2 | 1.4 |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
|
CWE-20 Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
https://access.redhat.com/security/cve/CVE-2026-18206
https://bugzilla.redhat.com/show_bug.cgi?id=2508292