CVE-2025-68675 is a vulnerability classified under CWE-532 (Insertion of Sensitive Information into Log File) affecting Apache Airflow versions before 3.1.6 and 2.11.1. Apache Airflow is a widely used open-source platform for programmatically authoring, scheduling, and monitoring workflows. The vulnerability arises because proxy URLs embedded with authentication credentials within Connection objects were not treated as sensitive data by default. Consequently, when these Connection objects are rendered or logged, the proxy credentials are output in plaintext logs. This exposure can lead to unauthorized disclosure of sensitive proxy authentication information, potentially allowing attackers to misuse these credentials to access proxy services or internal networks. The CVSS v3.1 base score is 7.5, reflecting high severity due to network attack vector, no required privileges or user interaction, and high confidentiality impact without affecting integrity or availability. The vulnerability is remotely exploitable without authentication, increasing the risk profile. Although no known exploits have been reported in the wild, the presence of sensitive data in logs presents a significant risk for credential theft and lateral movement. The issue is resolved in Apache Airflow versions 3.1.6 and 2.11.1, where proxy credentials are properly masked in logs. Users are recommended to upgrade promptly and review existing logs for potential credential exposure.

The primary impact of CVE-2025-68675 is the compromise of confidentiality due to the exposure of proxy authentication credentials in log files. Organizations running vulnerable versions of Apache Airflow risk unauthorized access to proxy services if attackers gain access to logs or intercept log data. This can lead to further network reconnaissance, unauthorized data access, or lateral movement within internal networks. Since Airflow is often used in critical data pipelines and cloud environments, leaked credentials could undermine the security of connected systems and services. The vulnerability does not affect integrity or availability directly but can facilitate subsequent attacks that do. The ease of exploitation—requiring no authentication or user interaction—combined with the widespread use of Airflow in enterprises and cloud providers, elevates the threat level. Exposure of proxy credentials may also violate compliance requirements related to credential management and data protection, potentially leading to regulatory penalties and reputational damage.

1. Upgrade Apache Airflow to version 3.1.6 or later if using Airflow 3.x, or to 2.11.1 or later if using Airflow 2.x, as these versions include fixes that mask proxy credentials in logs. 2. Audit existing log files for any exposure of proxy credentials and immediately rotate any credentials found to be compromised. 3. Implement strict access controls on log storage and transmission channels to minimize unauthorized access to sensitive log data. 4. Review and sanitize any custom logging configurations or plugins that might bypass default masking behavior. 5. Employ centralized log management solutions with encryption and role-based access controls to protect log integrity and confidentiality. 6. Educate DevOps and security teams about the risks of logging sensitive information and enforce secure coding and configuration practices. 7. Monitor network traffic and proxy usage for anomalous activities that could indicate misuse of leaked credentials. 8. Consider using environment variables or secure vaults for storing sensitive connection information instead of embedding credentials directly in proxy URLs.