CVE-2025-68637 in Uniffle
Summary
by MITRE • 01/07/2026
The Uniffle HTTP client is configured to trust all SSL certificates and
disables hostname verification by default. This insecure configuration exposes all REST API communication between the Uniffle CLI/client and the Uniffle Coordinator service to potential Man-in-the-Middle (MITM) attacks.
This issue affects all versions from before 0.10.0.
Users are recommended to upgrade to version 0.10.0, which fixes the issue.
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Analysis
by VulDB Data Team • 01/08/2026
The vulnerability described in CVE-2025-68637 represents a critical security flaw in the Uniffle HTTP client implementation that fundamentally compromises the integrity and confidentiality of communication between client and coordinator services. This issue manifests through an insecure default configuration that disables essential SSL/TLS security mechanisms, creating a pathway for attackers to intercept and manipulate sensitive data transmitted through the REST API interfaces. The flaw affects all versions prior to 0.10.0, indicating a long-standing security gap that could have been exploited by threat actors for extended periods.
The technical implementation of this vulnerability involves the HTTP client's default behavior of trusting all SSL certificates without proper validation and disabling hostname verification during TLS handshakes. This configuration pattern directly violates fundamental security principles outlined in industry standards such as CWE-295, which specifically addresses "Improper Certificate Validation" and "Improper Verification of Certificate with Hostname Mismatch." The absence of certificate pinning and hostname verification creates a scenario where attackers can deploy malicious SSL certificates that appear legitimate to the client, effectively enabling them to establish secure-looking connections while remaining invisible to the communication endpoint.
From an operational perspective, this vulnerability exposes the entire Uniffle ecosystem to sophisticated Man-in-the-Middle attacks that can result in complete data compromise and system infiltration. The REST API communication channels between the Uniffle CLI/client and Coordinator service become vulnerable to eavesdropping, data tampering, and authentication bypass attempts. Attackers could potentially intercept sensitive configuration data, user credentials, or operational metadata that flows through these interfaces, leading to unauthorized access to the distributed computing environment. This threat vector aligns with ATT&CK technique T1046 which covers Network Service Scanning, and T1566 which addresses Phishing, as the compromised communication channels could facilitate further attack progression.
The security implications extend beyond simple data interception to encompass potential system compromise through credential theft and service manipulation. When the HTTP client accepts any certificate without validation, it essentially removes the cryptographic protection that SSL/TLS is designed to provide, leaving the communication channel vulnerable to active attacks where malicious actors can present forged certificates and establish connections that appear legitimate to both client and server components. This configuration effectively nullifies the security benefits of transport layer encryption and creates a trust boundary that can be easily breached by adversaries with minimal technical expertise.
Organizations utilizing affected versions of Uniffle face significant risk exposure given that this vulnerability allows for complete communication interception without detection. The recommended remediation approach involves upgrading to version 0.10.0 which implements proper SSL certificate validation and hostname verification mechanisms. This upgrade addresses the root cause by restoring the intended security posture of the HTTP client implementation. Security teams should also consider implementing additional monitoring and detection measures to identify any potential exploitation attempts, particularly focusing on unusual certificate validation patterns or unexpected network communications that might indicate an active MITM attack. The fix aligns with industry best practices for secure communication protocols and demonstrates the importance of proper TLS implementation in distributed systems architecture.