Session Fixation in Apache Airflow - CVE-2026-82355
Published: September 22, 2026
Vulnerability identifier: #VU151540
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-82355
CWE-ID: CWE-384
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause principal confusion and misattribute audit records.
The vulnerability exists due to improper authentication in Airflow core API authentication handling when processing requests that include both a session cookie and an explicit Authorization bearer token. A remote user can place a valid session cookie in a victim's browser or client to cause principal confusion and misattribute audit records.
Deployments hosting the Airflow UI on a domain shared with other applications are the most exposed.
Affected software
Apache Airflow
How to mitigate CVE-2026-82355
Install security update from vendor's website.
Apache Airflow - update to 3.3.2