Is CVE-2026-40948 actively exploited?

No active exploitation of CVE-2026-40948 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-40948 be exploited remotely?

Yes. CVE-2026-40948 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-40948?

CVE-2026-40948 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-40948

CWE-352Published: April 18, 2026· Updated: Apr 20, 2026

5.4

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:0.6th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-40948 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.