Vulnerability Details CVE-2026-40948
The Keycloak authentication manager in `apache-airflow-providers-keycloak` did not generate or validate the OAuth 2.0 `state` parameter on the login / login-callback flow, and did not use PKCE. An attacker with a Keycloak account in the same realm could deliver a crafted callback URL to a victim's browser and cause the victim to be logged into the attacker's Airflow session (login-CSRF / session fixation), where any credentials the victim subsequently stored in Airflow Connections would be harvestable by the attacker. Users are advised to upgrade `apache-airflow-providers-keycloak` to 0.7.0 or later.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 7.2%
CVSS Severity
CVSS v3 Score 5.4
References
Products affected by CVE-2026-40948
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cpe:2.3:a:apache:apache-airflow-providers-keycloak:0.0.1
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cpe:2.3:a:apache:apache-airflow-providers-keycloak:0.1.0
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cpe:2.3:a:apache:apache-airflow-providers-keycloak:0.2.0
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cpe:2.3:a:apache:apache-airflow-providers-keycloak:0.3.0
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cpe:2.3:a:apache:apache-airflow-providers-keycloak:0.4.1
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cpe:2.3:a:apache:apache-airflow-providers-keycloak:0.5.3
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cpe:2.3:a:apache:apache-airflow-providers-keycloak:0.6.0