---
id: CVE-2026-82355
title: >-
  When a request to the Airflow core API carries both a session cookie and an
  explicit `Authorization: Bearer` token, Airflow resolves the caller from the
  cookie and ignores the bearer token, inverting the intended precedence of
  bearer ove…
summary: >-
  When a request to the Airflow core API carries both a session cookie and an
  explicit `Authorization: Bearer` token, Airflow resolves the caller from the
  cookie and ignores the bearer token, inverting the intended precedence of
  bearer ove…
severity: medium
cvss: 4.2
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N'
cwe:
  - CWE-384
vendor: apache
product: airflow
affected:
  - airflow = 3.3.0
  - airflow = 3.3.1
published: '2026-09-21'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T19:43:35.010'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82355'
references:
  - url: 'https://github.com/apache/airflow/pull/72225'
    label: security@apache.org
  - url: 'https://github.com/apache/airflow/pull/72723'
    label: security@apache.org
  - url: 'https://lists.apache.org/thread/3p7zpdvv40tn01m0xk5mt2rxg88mw8w1'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/21/4'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
epss: 0.00305
epssPercentile: 0.20707
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-21T15:23:48.747705Z'
ingestedAt: '2026-09-21T14:38:56.366Z'
---

## Overview

When a request to the Airflow core API carries both a session cookie and an explicit `Authorization: Bearer` token, Airflow resolves the caller from the cookie and ignores the bearer token, inverting the intended precedence of bearer over cookie. The request then executes -- and is recorded in the audit log -- as the cookie's principal rather than the identity the client explicitly presented.

Only Apache Airflow 3.3.0 and 3.3.1 are affected. Earlier releases do not contain the code path that caches the cookie-derived user, and are not vulnerable.

Exploiting this requires an attacker to first place a valid session cookie of their own into the victim's browser or client: for example by cookie tossing from a sibling subdomain, through cross-site scripting in a separate application sharing a parent domain, or via a shared workstation. Deployments that host the Airflow UI on a domain shared with other applications are therefore the most exposed; a deployment on a dedicated domain with no co-hosted applications is not reachable this way. The consequence is principal confusion and misattributed audit records rather than a direct privilege escalation.

Users of 3.3.0 or 3.3.1 should upgrade to Apache Airflow 3.3.2 or later, which resolves the caller from the explicitly supplied credential whenever one is present.

## Affected

- `airflow = 3.3.0`
- `airflow = 3.3.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.