Apache Airflow versions 3.1.0 through 3.1.7 session token (_token) in cookies is set to path=/ regardless of the configured [webserver] base_url or [api] base_url.
This allows any application co-hosted under the same domain to capture valid Airflow session tokens from HTTP request headers, allowing full session takeover without attacking Airflow itself.

Users are recommended to upgrade to Apache Airflow 3.1.8 or later, which resolves this issue.
Advisories

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Fixes

Solution

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Workaround

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History

Tue, 17 Mar 2026 10:30:00 +0000

Type Values Removed Values Added
Description Apache Airflow versions 3.1.0 through 3.1.7 session token (_token) in cookies is set to path=/ regardless of the configured [webserver] base_url or [api] base_url. This allows any application co-hosted under the same domain to capture valid Airflow session tokens from HTTP request headers, allowing full session takeover without attacking Airflow itself. Users are recommended to upgrade to Apache Airflow 3.1.8 or later, which resolves this issue.
Title Apache Airflow: Path of session token in cookie does not consider base_url - session hijacking via co-hosted applications
Weaknesses CWE-668
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-03-17T10:43:19.750Z

Reserved: 2026-03-03T10:12:24.113Z

Link: CVE-2026-28779

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-17T11:16:11.790

Modified: 2026-03-17T11:16:11.790

Link: CVE-2026-28779

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses