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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.
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Thu, 05 Nov 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in the SAML HTTP-Redirect binding implementation of Keycloak. The issue occurs because the server processes percent-encoded parameter names (like %53AMLResponse) while the signature verification logic only checks literal parameter names. An attacker can use this discrepancy to provide a crafted, unsigned SAML message that the server processes instead of a legitimately signed one, leading to full account takeover of federated users. | |
| Title | Keycloak-services: keycloak-services: saml redirect binding signature bypass via percent-encoded parameter names | |
| First Time appeared |
Redhat
Redhat build Keycloak Redhat red Hat Single Sign On |
|
| Weaknesses | CWE-347 | |
| CPEs | cpe:/a:redhat:build_keycloak: cpe:/a:redhat:red_hat_single_sign_on:7 |
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| Vendors & Products |
Redhat
Redhat build Keycloak Redhat red Hat Single Sign On |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-11-05T13:27:23.748Z
Reserved: 2026-10-27T13:49:55.445Z
Link: CVE-2026-117691
No data.
Status : Awaiting Analysis
Published: 2026-11-05T14:17:01.320
Modified: 2026-11-05T14:17:01.480
Link: CVE-2026-117691
No data.
OpenCVE Enrichment
Updated: 2026-11-05T15:15:19Z