Vulnerability Details CVE-2026-15943
A flaw was found in the Keycloak keycloak-services component, which handles the management of identity providers. The issue occurs when a delegated administrator updates an OIDC identity provider using a masked client secret sentinel value. Due to improper validation, Keycloak reuses the existing real secret even if security-sensitive fields like the token URL have been changed, allowing an attacker to redirect and capture the secret.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 26.8%
CVSS Severity
CVSS v3 Score 5.5
References
Products affected by CVE-2026-15943
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cpe:2.3:a:redhat:build_of_keycloak:-