Description

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/<ID>/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.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "4.3",
  "pubDate": "2026-09-04T05:17:15.587Z",
  "pubdate": "2026-09-04T05:17:15.587Z",
  "executiveSummary": "A denial-of-service (DoS) vulnerability exists in Eleveo Quality Management version 9.7.0 within the Conversation Handler component. The flaw is triggered via the /enc-fwk-data/api/v3/conversations/<ID>/events endpoint by manipulating the 'labels' argument.\nThis vulnerability allows remote, unauthenticated attackers to cause a service disruption, potentially rendering the Quality Management interface unresponsive or forcing a crash of the affected handler process. The lack of input validation on the specific API endpoint is the primary vector for this issue. Since the exploit is publicly available and the vendor has remained unresponsive, the risk to organizations deploying Eleveo 9.7.0 is significant. There are no known patches, making it critical to implement network-level filtering or input sanitization to prevent exploitation.",
  "technicalDetails": "The vulnerability resides in the Conversation Handler component of Eleveo Quality Management 9.7.0, specifically within the event processing logic of the REST API endpoint located at /enc-fwk-data/api/v3/conversations/<ID>/events. The root cause is improper handling of the 'labels' argument provided during an API request. It appears that the application fails to adequately validate or constrain the data structure, length, or content of this input parameter before passing it to internal processing routines.\nWhen a remote attacker submits a specially crafted request to this endpoint containing a manipulated 'labels' argument, the application logic enters an unstable state. This likely stems from a resource exhaustion issue, an unhandled exception, or an infinite loop triggered during the deserialization or processing of the malicious labels data. Because the API is publicly exposed to facilitate conversation data management, an attacker can trigger this condition without requiring specific user privileges or prior authentication.\nThe attack flow proceeds as follows: First, the attacker identifies a valid <ID> for a conversation within the system. Second, the attacker constructs an HTTP request targeting the /enc-fwk-data/api/v3/conversations/<ID>/events path, injecting the malicious 'labels' payload into the request body or query parameters as required by the API's schema. Upon receipt, the Conversation Handler attempts to parse this input. Due to the lack of robust input sanitization, the processing logic fails, leading to an immediate denial of service for the targeted component or potentially the wider application infrastructure.\nThe post-exploitation impact is limited to the availability of the service. By repeatedly sending the malicious payload, an attacker can achieve a persistent state of denial, effectively preventing users from accessing or managing conversation events. Given that this component is central to the Quality Management functionality, the disruption hinders operational monitoring and audit capabilities. As the vendor has not provided an official remediation or patch, the vulnerability remains active, and the public availability of the exploit code significantly lowers the barrier to entry for potential adversaries."
}