CVE-2026-28779CWE-668

Apache Airflow: Path of session token in cookie does not consider base_url - session hijacking via co-hosted applications

High · published March 17, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
55.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00785 · 55.6th percentile
Weakness
CWE-668 · Exposure of Resource to Wrong Sphere
Published
2026-03-17T10:15Z
EPSS history
Timeline
  • 17 MAR 10:15Z
    Apache Airflow: Path of session token in cookie does not consider base_url - session hijacking via co-hosted applications
    cvelistv5