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Highest advisory severityMedium 1 vendor · 2 advisories

CVE-2026-40948

The Keycloak authentication manager in `apache-airflow-providers-keycloak` did not generate or validate the OAuth 2.0 `state`…

CVE-2026-40948: The Keycloak authentication manager in `apache-airflow-providers-keycloak` did not generate or validate the OAuth 2.0 `state`….

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

CVE-2026-40948 at a glance

CISA KEV
Not listed (catalog checked )
Highest advisory severity
Medium
CVSS base score
5.4 (Apache)
Fixed releases
  • Apache: 0.7.0
Vendor advisories
2 from Apache
VulniPulse record
Published · Updated

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-40948; bulletin-wide values are not repeated here.

Is CVE-2026-40948 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-40948 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-40948?

Upgrade to a fixed release named by the vendor:

  • Apache: 0.7.0

Vendor advisory comparison

Apache

2 advisories
  • Advisory severityMedium5.4

    Medium [CVE-2026-40948] The Keycloak authentication manager in `apache-airflow-providers-keycloak` did not generate or validate the OAuth 2.0 `state`…

    CVE-2026-40948Source published Source updated

    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.

    Affected products in this advisory
    • Airflow
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • 0.7.0
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin
  • Advisory severityUnrated

    Advisory [CVE-2026-40948 +1] Apache Airflow Amazon provider: the AWS auth manager's SAML login flow does not bind the authentication response to the browser that began it

    CVE-2026-86467Source published Source updated

    This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    Apache Airflow Amazon provider: the AWS auth manager's SAML login flow does not bind the authentication response to the browser that began it. The login handler discards the AuthnRequest ID and the callback validates the assertion without requiring a matching InResponseTo, so an unauthenticated attacker who can cause a victim to load a page can complete a SAML login in the victim's browser using the attacker's own assertion, silently logging the victim into the attacker's Airflow account. Subsequent work the victim performs lands in a session the attacker controls. The victim needs only to visit an attacker-controlled page; no Airflow account or credential is required of the attacker. This is the same login-CSRF class fixed in the Keycloak auth manager as CVE-2026-40948. Users of…

    Related products — impact not confirmed
    • Apache Airflow Amazon
    Source-reported affected versions
    • Apache Airflow Amazon provider before 9.38.0
    Source-reported fixed versions
    • 9.38.0
    Mitigation guidance
    • Users of apache-airflow-providers-amazon are recommended to upgrade to version 9.38.0, which fixes the issue.
    Full advisory and evidenceOpen source bulletin

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