CVE-2026-59244 Apache CVE debrief

Who should care

Defenders responsible for Apache Airflow deployments should assess exposure and prioritize upgrading to apache-airflow 3.3.1 or later to prevent unauthorized access to sensitive information.

Why it matters

Defenders should care about CVE-2026-59244 because it allows unauthorized access to sensitive information in Apache Airflow deployments. The vulnerability requires verification of exposure, updating access controls, and upgrading to a fixed version.

• Potential unauthorized access to sensitive information
• Need to verify and update access controls for Rendered Templates views
• Requirement to upgrade to apache-airflow 3.3.1 or later for proper masking

Technical summary

Apache Airflow's secrets masker did not properly mask `var.json` Variable values that are dictionaries in the Rendered Templates UI. This allows users with access to a task's Rendered Templates view to see secret values stored as JSON Variables in cleartext. The vulnerability requires verification of exposure, updating access controls, and upgrading to a fixed version. The issue affects users with access to Rendered Templates views and allows them to see secret values in cleartext. Defenders should prioritize upgrading to apache-airflow 3.3.1 or later to prevent unauthorized access to sensitive information. The vulnerability has a CVSS score of 6.5 and a severity of MEDIUM.

Defensive priority

Defenders should prioritize upgrading to apache-airflow 3.3.1 or later to prevent unauthorized access to sensitive information.

Recommended defensive actions

• Upgrade to apache-airflow 3.3.1 or later
• Review and update access controls for Rendered Templates views
• Verify masking of sensitive Variable values
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description and affected versions. The vulnerability was publicly disclosed on 2026-08-12 and has not been modified since then. There are no known exploits or attacks in the wild, but defenders should verify exposure and update access controls to prevent unauthorized access. The CVE Program and NVD provide official records and assessments of the vulnerability. Defenders should review these sources and assess their own exposure to the vulnerability. The N

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.