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CVE-2026-86473: Apache Airflow

Severity

9.1 (CRITICAL)

Vendor

APACHE

Affected versions

3.0.0 through before 3.3.2

Patch status

Unknown

Published

2026-09-21T15:17:32.997

Modified

2026-09-21T19:17:13.880

Why it matters

This matters because the issue affects identity or token handling. Successful exploitation could allow unauthorized authentication, client manipulation, or access to protected services.

Recommended admin actions

• Prioritize validation immediately due to critical CVSS severity.

Technical summary

Apache Airflow: the Core API logout endpoint revokes only a session token presented as the _token cookie. When a client logs out presenting its credential as an Authorization bearer header instead, the endpoint returns its normal logout response but revokes nothing, so the token remains valid until it expires. An attacker who already holds a copy of that token keeps the victim's access after the victim has logged out and believes the session ended; the default token lifetime is 24 hours and is configurable. Affects API clients that authenticate with a bearer token rather than the browser session cookie. The attacker must already possess a copy of a valid token; obtaining one is outside the scope of this issue, and no privileges beyond the victim's own are gained. Users of apache-airflow are recommended to upgrade to apache-airflow version 3.3.2 or later, which fixes the issue.

View the official NVD record for CVE-2026-86473

CVE data is sourced from NVD/CNA records and optional enrichment. Validate against the vendor advisory before taking production action.