CVE-2026-75171 in HubCore
Summary
by MITRE • 09/04/2026
An issue in HubCore v.14.1.1 allows a remote attacker to escalate privileges via the HUBCOREID session cookie handling component.
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Analysis
by VulDB Data Team • 09/04/2026
The vulnerability identified within HubCore version 14.1.1 represents a critical security flaw centered on improper validation and management of the HUBCOREID session cookie. This specific component is responsible for maintaining user state across HTTP requests, serving as the primary mechanism by which the application authenticates users and determines their access rights. The core technical deficiency lies in how the server processes this identifier during authentication checks. Specifically, the system fails to adequately verify the integrity or origin of the HUBCOREID value before granting elevated permissions based on its contents. This lack of rigorous validation allows a remote attacker to manipulate the session token, effectively bypassing standard access control mechanisms that are designed to restrict certain functionalities to authorized personnel only.
From an operational perspective, this flaw enables privilege escalation, allowing individuals with low-level or unauthenticated access to assume the roles and permissions of higher-privileged users, such as administrators. By crafting a malicious HUBCOREID value, an attacker can trick the server into believing they are authenticated as a privileged entity. This compromise undermines the fundamental security principle of least privilege, potentially leading to unauthorized modification of system configurations, exfiltration of sensitive data, or complete takeover of the application environment. The impact is severe because it bypasses traditional authentication barriers without requiring complex exploitation techniques beyond cookie manipulation, making it accessible to attackers with basic knowledge of web session management.
This vulnerability aligns closely with Common Weakness Enumeration (CWE) category CWE-284, which describes Improper Access Control, and more specifically relates to issues involving insecure direct object references or improper validation of security tokens. In the context of the MITRE ATT&CK framework, this behavior is indicative of techniques associated with T1078, Valid Accounts, where attackers leverage legitimate credentials or session identifiers that have been forged or stolen to gain unauthorized access. The exploitation path typically involves intercepting a valid session cookie from an authenticated user and modifying its content to reflect higher privileges, or generating a new token if the signing mechanism is weak or predictable.
Mitigation strategies must focus on strengthening the integrity verification of session tokens. Developers should implement cryptographic signatures for all session cookies using strong algorithms such as HMAC-SHA256 to ensure that any tampering with the HUBCOREID value results in immediate rejection by the server. Additionally, implementing strict input validation and ensuring that privilege levels are derived from secure backend data stores rather than trusting values contained within client-side tokens is essential. Regular security audits focusing on authentication flows and session management practices will help identify similar weaknesses before they can be exploited in production environments.