Project Subscriptions
No advisories yet.
Solution
No solution given by the vendor.
Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Fri, 31 Jul 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Fri, 31 Jul 2026 07:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Keycloak-services: keycloak-services: oidc redirect_uri fragment bypass in http parameter pollution check | |
| First Time appeared |
Redhat
Redhat build Keycloak Redhat jboss Data Grid Redhat jbosseapxp Redhat red Hat Single Sign On |
|
| Weaknesses | CWE-1288 | |
| CPEs | cpe:/a:redhat:build_keycloak: cpe:/a:redhat:jboss_data_grid:8 cpe:/a:redhat:jbosseapxp cpe:/a:redhat:red_hat_single_sign_on:7 |
|
| Vendors & Products |
Redhat
Redhat build Keycloak Redhat jboss Data Grid Redhat jbosseapxp Redhat red Hat Single Sign On |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-07-31T15:58:30.079Z
Reserved: 2026-07-29T08:19:43.641Z
Link: CVE-2026-18209
Updated: 2026-07-31T15:56:44.902Z
No data.
No data.
OpenCVE Enrichment
No data.