CVE-2026-117184 in Server
Summary
by MITRE • 10/30/2026
An issue in the GraphQL endpoint of traggo server v0.8.3 allows attackers to cause a Denial of Service (DoS) via a crafted POST request to the GraphQL endpoint
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Analysis
by VulDB Data Team • 10/30/2026
The vulnerability identified in Traggo Server version 0.8.3 represents a significant security flaw within its GraphQL API implementation, specifically affecting how the server processes incoming POST requests directed at the GraphQL endpoint. As an application that utilizes GraphQL for data querying and mutation operations, Traggo relies on complex parsing logic to interpret client-submitted queries. The core technical issue stems from insufficient validation or resource management mechanisms when handling specific crafted payloads sent via HTTP POST methods. This flaw allows malicious actors to exploit the server's processing capabilities by submitting requests designed to trigger excessive computational load or memory consumption without requiring authentication, thereby bypassing standard access controls that might otherwise limit such operations in a production environment.
From a technical perspective, this vulnerability is classified under CWE-787: Out-of-bounds Write and potentially CWE-400: Uncontrolled Resource Consumption, depending on the specific internal mechanism triggered by the malformed request. In many GraphQL implementations, deeply nested queries or excessively large payloads can lead to stack overflows or infinite recursion if depth limiting and complexity analysis are not strictly enforced at the schema level. The attacker leverages this weakness by constructing a POST request containing a specially crafted query structure that forces the server into an unresponsive state. This could involve creating circular references in data resolution, requesting excessively large result sets without pagination limits, or exploiting parser inefficiencies that cause the application thread to hang indefinitely.
The operational impact of this Denial of Service vulnerability is severe for any organization relying on Traggo Server for time tracking and project management workflows. By successfully executing a crafted POST request against the vulnerable GraphQL endpoint, an attacker can render the service unavailable to legitimate users. This disruption halts critical business operations that depend on real-time data entry and reporting features provided by the application. Since the attack vector does not require prior authentication, it is particularly dangerous as it lowers the barrier for exploitation significantly. Any external user with network access to the server's public-facing interface can initiate this DoS condition, leading to potential service outages, loss of productivity, and increased operational costs associated with incident response and system recovery efforts.
To mitigate this vulnerability, immediate action should be taken by upgrading Traggo Server to a patched version where these input validation and resource management issues have been addressed. In the interim, or for systems that cannot immediately upgrade, administrators should implement network-level controls such as rate limiting on the GraphQL endpoint to restrict the frequency of POST requests from single IP addresses. Additionally, deploying a Web Application Firewall with rules specifically tuned to detect anomalous GraphQL query structures can help block malicious payloads before they reach the application server. It is also recommended to enforce strict depth and complexity limits within the GraphQL schema configuration if supported by the current version, ensuring that queries do not exceed predefined thresholds for nesting levels or field counts. Regular security audits of API endpoints are essential to identify similar weaknesses in other services exposed through the same infrastructure.