CVE-2026-85407 in Quality Management
Summary
by MITRE • 09/04/2026
A vulnerability was found in Eleveo Quality Management 9.7.0. This issue affects some unknown processing of the file /enc-fwk-data/api/v3/conversations//events of the component Conversation Handler. The manipulation of the argument labels results in denial of service. The attack can be executed remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 09/04/2026
The Eleveo Quality Management platform, specifically version 9.7.0, contains a critical security flaw within its Conversation Handler component that allows for remote denial of service attacks. This vulnerability resides in the processing logic associated with the API endpoint /enc-fwk-data/api/v3/conversations//events. The core issue stems from an improper handling of input data, specifically when manipulating the labels argument passed to this endpoint. As a cyber security specialist observing this disclosure, it is evident that the application fails to adequately validate or sanitize these inputs before processing them through its internal event management systems. This lack of robust input validation creates a pathway for attackers to inject malformed or excessively large payloads into the label field, triggering an unhandled exception or resource exhaustion condition within the server-side code.
From a technical perspective, this flaw aligns with CWE-20 Improper Input Validation and potentially CWE-400 Uncontrolled Resource Consumption if the manipulation leads to infinite loops or excessive memory allocation during event processing. The vulnerability is classified as remote exploitable, meaning an attacker does not need prior authentication or physical access to the network infrastructure hosting the Eleveo instance. By sending a specifically crafted HTTP request with maliciously constructed labels in the events endpoint payload, an adversary can disrupt the normal operation of the application. This results in a denial of service condition where legitimate users are unable to access quality management features, call recordings, or analytics data hosted on the platform. The operational impact is severe for organizations relying on Eleveo for continuous monitoring and compliance reporting, as prolonged downtime can hinder critical business operations and regulatory adherence.
The ATT&CK framework categorizes this type of vulnerability under T1499 Endpoint Denial of Service, which involves techniques used to make software or hardware resources unavailable to intended users. Since the exploit has been made public, the risk landscape is significantly elevated. Publicly available exploits lower the barrier to entry for malicious actors who may lack sophisticated development skills but can leverage existing tools to disrupt services. The fact that the vendor was contacted early regarding this disclosure yet failed to respond indicates a critical gap in their security incident response process. This silence leaves customers exposed without official patches, workarounds, or guidance on how to mitigate the risk through configuration changes such as web application firewall rules or input length restrictions at the network perimeter.
Mitigation strategies must be implemented immediately given the absence of vendor support. Organizations should prioritize deploying a Web Application Firewall rule that inspects incoming requests to the /enc-fwk-data/api/v3/conversations/ endpoint, specifically targeting the labels parameter for abnormal size or suspicious character patterns. Rate limiting on this API endpoint can also help mitigate the impact by preventing rapid-fire malicious requests from overwhelming server resources. Additionally, network segmentation should be reviewed to ensure that this specific service is not directly exposed to untrusted networks if possible. Long-term remediation requires pushing Eleveo to address this flaw through a software update or hotfix once they resume communication with their customer base and security researchers. Until then, continuous monitoring of application logs for error spikes related to event processing can serve as an early warning system for active exploitation attempts.