7.5

CVSS Score

3.1

-

CVSS Score

Basic Information

Concerned about an active attack path?

Talk to our security experts and see Miggo in action.

Miggo Vulnerability Database

→

CVE-2025-66236

CVE-2025-66236: Apache Airflow: Secrets from Airflow config file logged in plain text in DAG run logs UI

Before Airflow 3.2.0, it was unclear that secure Airflow deployments require the Deployment Manager to take appropriate actions and pay attention to security details and security model of Airflow. Some assumptions the Deployment Manager could make were not clear or explicit enough, even though Airflow's intentions and security model of Airflow did not suggest different assumptions. The overall security model [1], workload isolation [2], and JWT authentication details [3] are now described in more detail. Users concerned with role isolation and following the Airflow security model of Airflow are advised to upgrade to Airflow 3.2, where several security improvements have been implemented. They should also read and follow the relevant documents to make sure that their deployment is secure enough. It also clarifies that the Deployment Manager is ultimately responsible for securing your Airflow deployment. This had also been communicated via Airflow 3.2.0 Blog announcement [4].

[1] Security Model: https://airflow.apache.org/docs/apache-airflow/stable/security/jwt_token_authentication.html [2] Workload isolation: https://airflow.apache.org/docs/apache-airflow/stable/security/workload.html [3] JWT Token authentication: https://airflow.apache.org/docs/apache-airflow/stable/security/jwt_token_authentication.html [4] Airflow 3.2.0 Blog announcement: https://airflow.apache.org/blog/airflow-3.2.0/

Users are recommended to upgrade to version 3.2.0, which fixes this issue.

(GitHub Advisory)

Miggo Vulnerability Database

→

CVE-2025-66236

CVE-2025-66236:

7.5

CVSS Score

3.1

-

CVSS Score

Basic Information

Is this CVE running in your environment?

Easily map the attack path and prioritize which CVEs are a threat to your organization

Validate Exposure

Technical Details

SSVC / BOD 26-04 ↗

Exploitation NoneAutomatable YesTech Impact Partial

Select your environment

→SSVCDeferfix on upgrade

Runtime reachability resolves your actual outcome.Book a demo

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
apache-airflow	pip	>= 3.0.0, < 3.2.0	3.2.0

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability, CVE-2025-66236, involves the logging of secrets in plain text within the Apache Airflow DAG run logs UI. The root cause was traced to a deprecated import path for the mask_secret function.

The investigation of the provided pull request, https://github.com/apache/airflow/pull/58662, and its associated commit, 667cb850edacfd0cc7153f98ef39ac5af7e8ef7c, pinpointed the issue to the task-sdk/src/airflow/sdk/execution_time/secrets_masker.py file. This file serves as a compatibility layer for the deprecated import path and utilizes a __getattr__ function to dynamically load requested functions.

The vulnerability existed because when a user's DAG code imported mask_secret from this deprecated module, the __getattr__ function would load an incorrect implementation from airflow.sdk._shared.secrets_masker. This version of mask_secret was designed for a single-process environment and did not communicate the list of secrets to be masked to the separate supervisor process responsible for writing logs. Consequently, secrets were not redacted and appeared in plain text.

The patch addresses this by modifying the __getattr__ function. It now includes a specific condition to check if the requested function is mask_secret. If so, it correctly imports the multi-process aware version from airflow.sdk.log, which ensures that secrets are properly communicated to the logging process and redacted.

Therefore, the function airflow.sdk.execution_time.secrets_masker.__getattr__ is identified as the vulnerable function. It facilitated the use of the insecure mask_secret implementation, leading to the exposure of sensitive information in the logs.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

Vulnerability Intelligence
Miggo AI

Unlock WAF rules for this CVE

Generate vendor-ready rules for the observed attack patterns, plus reasoning and safe deployment guidance

Get WAF rules

WAF Protection Rules

WAF Rule

W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.

Reasoning

*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.