---
id: CVE-2026-54183
title: >-
  Apache Airflow's secrets masker hides values stored under sensitive key names
  when they are displayed in the UI
summary: >-
  Apache Airflow's secrets masker hides values stored under sensitive key names
  when they are displayed in the UI. The masker's recursion-depth limit did not
  descend into values nested inside a list, tuple, or set beyond that limit, so
  an …
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-200
vendor: apache
product: airflow
affected:
  - airflow < 3.3.1
patched:
  - airflow 3.3.1
published: '2026-08-12'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T15:17:37.610'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54183'
references:
  - url: 'https://github.com/apache/airflow/pull/68422'
    label: security@apache.org
  - url: 'https://lists.apache.org/thread/z5mrdq6c60f2wyx4cc64cj8nv0dxd9lo'
    label: security@apache.org
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-42358'
    label: security@apache.org
tags:
  - nvd
  - cve.org
  - osv
  - pip
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-12T16:42:41.368499Z'
epss: 0.00636
epssPercentile: 0.4822
aliases:
  - PYSEC-2026-3705
  - BIT-airflow-2026-54183
ecosystem: pip
ingestedAt: '2026-08-19T19:22:21.239Z'
---

## Overview

Apache Airflow's secrets masker hides values stored under sensitive key names when they are displayed in the UI. The masker's recursion-depth limit did not descend into values nested inside a list, tuple, or set beyond that limit, so an Airflow Variable holding such a deeply-nested value was shown unmasked in the Variables UI. The exposure is limited to the UI: any authenticated user who can see the Variable in the UI can already read its full value through the Variables REST API, so this does not disclose data the user could not otherwise obtain — the masking is a shoulder-surfing defense for the UI, not an access-control boundary.

This is an incomplete-fix follow-up to CVE-2026-42358, whose fix made only the dictionary walk unbounded; lists, tuples, and sets beyond the depth limit remained unmasked in the UI. Deployments that applied the CVE-2026-42358 fix should also upgrade to address this residual case. Upgrade to apache-airflow 3.3.1 or later.

## Affected

- `airflow < 3.3.1`

## Remediation

Upgrade past the affected range:

- `airflow 3.3.1`

## Package advisory (CVE-2026-54183)

Affected packages:

- `apache-airflow < 3.3.1`

Patched in:

- `apache-airflow 3.3.1`

Source: https://osv.dev/vulnerability/PYSEC-2026-3705