CVE-2026-40948

MEDIUM EPSS 24.6%
Published Apr 18, 20262mo ago · Modified Jun 17, 20261w ago
5.4 CVSS 3.1
Medium
Find Similar
Published Apr 18, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.4
Exploitability
2.8
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
24.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-352 Cross-Site Request Forgery (CSRF) Authentication

Affected Products 1

VendorProductVersionRange
apacheapache-airflow-providers-keycloak*≥0.0.1  –  <0.7.0

References 3

  • openwall.com http://www.openwall.com/lists/oss-security/2026/04/17/14
    Mailing ListThird Party Advisory
  • github.com https://github.com/apache/airflow/pull/64114
    Issue TrackingPatch
  • lists.apache.org https://lists.apache.org/thread/kc0odpr70hbqhdb9ksnz42fkqz2xld9q
    Mailing ListVendor Advisory

Remediation

  • github.com https://github.com/apache/airflow/pull/64114
    Issue TrackingPatch