CVE-2026-18217 Detail
Received
This CVE record has recently been published to the CVE List and has been included within the NVD dataset. DescriptionA flaw was found in the SAML protocol implementation of Keycloak, an open-source identity and access management solution. The issue occurs when Keycloak handles SAML authentication requests using the HTTP-Redirect binding. If a client is configured with a wildcard redirect URL, an attacker can craft a request that includes malicious parameters. When a user authenticates, Keycloak appends its legitimate response to the attacker's parameters. This can cause some service providers to process the attacker's data instead of the real login information, potentially leading to a user being logged into the wrong account. Metrics
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CVSS 4.0 Severity and Vector Strings:
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Weakness Enumeration
Quick InfoCVE Dictionary Entry:CVE-2026-18217 NVD Published Date: 07/31/2026 NVD Last Modified: 07/31/2026 Source: Red Hat, Inc. |
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