CVE-2026-54183 Apache CVE debrief

Who should care

Airflow administrators and users with access to the Variables UI should assess exposure and upgrade to apache-airflow 3.3.1 or later. They should verify UI secrets masking for deeply-nested values, assess exposure for Airflow Variables with sensitive data, and review access controls for the Variables UI.

Why it matters

CVE-2026-54183 exposes secrets in the Apache Airflow UI due to an incomplete fix for CVE-2026-42358. The vulnerability allows authenticated users to view unmasked sensitive data in the Variables UI. Upgrading to apache-airflow 3.3.1 or later addresses this issue.

• Verify UI secrets masking for deeply-nested values
• Assess exposure for Airflow Variables with sensitive data
• Upgrade to apache-airflow 3.3.1 or later to address UI secrets exposure
• Review access controls for the Variables UI

Technical summary

Apache Airflow's secrets masker did not properly hide values stored under sensitive key names when displayed in the UI, due to a recursion-depth limit issue. 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. This exposure is limited to the UI and does not disclose data that a user could not otherwise obtain through the Variables REST API. The issue was addressed with apache-airflow 3.3.1 or later.

Defensive priority

Upgrade to apache-airflow 3.3.1 or later to address UI secrets exposure

Recommended defensive actions

• Upgrade to apache-airflow 3.3.1 or later
• Review and adjust access controls for the Variables UI
• Verify the fix for CVE-2026-42358
• Verify UI secrets masking for deeply-nested values
• Assess exposure for Airflow Variables with sensitive data
• Review access controls for the Variables UI
• Monitor for potential exploitation attempts

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. The NVD entry is currently Analyzed. 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. The fix for this issue is included in apache-airflow 3.3.1 or later.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.