CVE-2026-92780 in KnowStreaming
Summary
by MITRE • 09/16/2026
KnowStreaming through 3.4.1 fails to enforce role-based access control on REST API endpoints, allowing any authenticated user to access protected functionality. Attackers can call identity-management endpoints to create administrator accounts or grant themselves administrative privileges without proper authorization.
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Analysis
by VulDB Data Team • 09/16/2026
The vulnerability identified in KnowStreaming versions up to 3.4.1 represents a critical failure in the implementation of role-based access control mechanisms within its REST API architecture. This flaw allows any authenticated user, regardless of their assigned privilege level or organizational role, to bypass security restrictions and execute administrative functions that should be strictly reserved for system administrators. The core technical issue lies in the absence of proper authorization checks on specific endpoints responsible for identity management and user provisioning. While the application correctly verifies that a user is logged in via authentication tokens or session cookies, it fails to validate whether that authenticated entity possesses the necessary permissions to perform actions such as creating new accounts, modifying existing roles, or escalating privileges. This gap effectively renders the authentication layer insufficient for protecting sensitive administrative operations, as the system trusts the presence of any valid credential rather than verifying the specific rights associated with those credentials.
From a technical perspective, this vulnerability is classified under CWE-285: Improper Authorization, which describes scenarios where an application does not properly verify that a user has the appropriate permissions to perform a requested action. In the context of KnowStreaming, the REST API endpoints designed for managing identities lack middleware or controller-level checks that inspect the current session's role attributes before processing requests. Consequently, an attacker who obtains valid credentials—whether through phishing, credential stuffing, or other means of account compromise—can interact directly with these unprotected endpoints using standard HTTP methods such as POST or PUT to manipulate user data. The vulnerability enables lateral movement within the application by allowing a low-privileged user to elevate their own status to that of an administrator without requiring any additional exploitation techniques beyond basic API interaction.
The operational impact of this flaw is severe, potentially leading to complete compromise of the KnowStreaming environment. An attacker can create new administrative accounts with full access rights, effectively establishing persistent backdoors within the system even if original credentials are rotated or revoked. Furthermore, by granting themselves administrative privileges, an intruder gains the ability to modify application configurations, manage streaming resources, and potentially access sensitive data stored or processed through the platform. This level of unauthorized control undermines the integrity and confidentiality guarantees provided by the software, allowing for potential data exfiltration, service disruption, or further exploitation of downstream systems if KnowStreaming is integrated with other enterprise services that trust its authentication state.
This vulnerability aligns closely with MITRE ATT&CK technique T1078: Valid Accounts, specifically within the context of privilege escalation and persistence mechanisms. Attackers can leverage this flaw to maintain long-term access by creating dedicated administrative accounts that are difficult to detect among legitimate users. The ability to manipulate identity management endpoints also facilitates broader attack chains, such as T1098: Account Manipulation, where attackers alter account properties to ensure continued access or evade detection systems that monitor for anomalous login patterns but do not inspect API-level permission violations.
To mitigate this risk, immediate action is required to patch the KnowStreaming installation to version 3.4.2 or later, which addresses these authorization gaps by implementing strict role-based checks on all identity management endpoints. In environments where upgrading is not immediately feasible, network-level controls such as Web Application Firewalls can be configured to restrict access to administrative API paths based on IP whitelisting or specific header validation, although this is a less robust defense than fixing the code logic. Additionally, organizations should audit existing user roles and permissions to ensure that no non-administrative accounts have been inadvertently granted elevated privileges prior to patching. Implementing comprehensive logging for all identity management operations will also aid in detecting any unauthorized attempts or successful exploits of this vulnerability during the remediation window.