| ID |
CVE-2026-18209
|
| Sažetak |
A flaw was found in the keycloak-services component of Keycloak, which handles OpenID Connect (OIDC) authentication flows. The issue occurs because the security check designed to prevent HTTP parameter pollution only inspects the query portion of a redirect URL and ignores the fragment portion. When a client is configured with a wildcard redirect URI, an attacker can use this to inject duplicate security parameters into the login response. If a client application is not configured correctly, it might trust the attacker's injected data instead of the real security information from Keycloak, leading to session fixation or account confusion. |
| Reference |
|
| CVSS |
| Base: | 3.4 |
| Impact: | 1.4 |
| Exploitability: | 1.6 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| NETWORK |
HIGH |
NONE |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| NONE |
LOW |
NONE |
|
| CVSS vektor |
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N |
| Zadnje važnije ažuriranje |
31-07-2026 - 16:17 |
| Objavljeno |
31-07-2026 - 08:16 |
