Apache Airflow: Airflow Variables were not masked in the UI for authenticated users (CVE-2026-54183) | HOL Guard CVE

Medium · CVSS 4.3CVE-2026-54183

Apache Airflow: Airflow Variables were not masked in the UI for authenticated users

Answer in brief

CVE-2026-54183 records a Medium severity (CVSS 4.3) vulnerability in Apache Airflow: Airflow Variables were not masked in the UI for authenticated users. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/Apache Airflow (generic), apache-airflow (pypi). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 12, 2026Updated Sep 16, 2026Source checked Sep 26, 2026First seen by HOL Aug 12, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.3
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 4.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/Apache Airflow (generic), apache-airflow (pypi). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:apache:airflow::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Apache Software Foundation/Apache Airflowgeneric	>=0 <3.3.1	3.3.1
apache-airflowpypi	>=0 <3.3.1	3.3.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/Apache Airflow, apache-airflow.
Review the reported fix. Update Apache Software Foundation/Apache Airflow to 3.3.1; apache-airflow to 3.3.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 12, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.