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CVE-2026-93998Keycloak-core: keycloak-core: saml adapter does not bind signed assertions to the configured identity provider issuer

A flaw was found in the SAML adapter component of Keycloak, which is used to secure applications with SAML-based authentication. The adapter fails to verify that the issuer of a signed SAML assertion matches the expected identity provider configured for the application. If multiple identity providers share the same trusted signing key, an attacker who controls one of those providers can create a validly signed assertion to log into the application as any user, potentially gaining full administrative control.

7.4 HIGHEPSS 0.26%Not in KEVNVD: Awaiting Analysis

OverviewAffected ProductsReferences
NVD CVE.org

Overview

Severity

ScoreSeverityVersionVector String
7.4HIGH3.1redhat (CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Details

CVE ID
CVE-2026-93998
Status
Awaiting Analysis
Assigner (CNA)
redhat
Published
Nov 5, 2026
Last modified
2026-11-06 19:44 UTC
Weaknesses
  • CWE-347 · Improper Verification of Cryptographic Signature

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 07:42 UTC.