CVE-2026-6087 in StockAgile
Summary
by MITRE • 09/25/2026
Stored Cross-Site Scripting (XSS) vulnerability in StockAgile API and management panel. The vulnerability is present on the server side in REST endpoint '/inventory/configuration/categories' that allow the injection and persistence of malicious JavaScript code through parameters such as ‘code’, ‘name’, and other text fields. The scripts that are entered are not filtered or validated correctly before being displayed on the web panel that authenticated users can access. Exploiting this vulnerability could allow a remote, previously authenticated attacker to execute arbitrary JavaScript code.
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Analysis
by VulDB Data Team • 09/25/2026
The identified security flaw represents a classic instance of Stored Cross-Site Scripting within the StockAgile application infrastructure, specifically targeting the server-side REST endpoint located at /inventory/configuration/categories. This architectural component is responsible for managing inventory configuration categories and accepts user-supplied input through parameters such as code, name, and various other text fields intended for descriptive metadata. The core technical deficiency lies in the inadequate sanitization and validation of these inputs prior to their persistence in the backend database or subsequent rendering within the management panel interface. Unlike reflected XSS where malicious payloads are executed immediately from a crafted URL, this vulnerability allows an attacker to inject persistent scripts that remain stored on the server until retrieved by legitimate users, thereby amplifying the potential blast radius significantly.
From a technical perspective, the failure occurs during the input processing phase of the HTTP request lifecycle handled by the API endpoint. When authenticated users submit data containing malicious JavaScript fragments, the application fails to apply appropriate encoding or filtering mechanisms such as output escaping or context-aware validation. Consequently, when these stored values are retrieved and rendered in the web management panel without proper sanitization, the browser interprets the injected content as executable code rather than static text. This behavior violates fundamental secure coding principles regarding the separation of data and code, allowing client-side scripts to run with the same privileges and context as legitimate application scripts.
The operational impact of this vulnerability is severe due to its persistent nature and the requirement for prior authentication. While it does not allow unauthenticated remote code execution on the server itself, it enables a compromised or malicious authenticated user to perform actions that impersonate other users within the management panel. An attacker can exploit this flaw to steal session cookies, hijack administrative sessions, deface the application interface, or redirect users to phishing sites designed to harvest credentials for further lateral movement within the organization's network. The ability to execute arbitrary JavaScript means the attacker gains significant control over the client-side experience of all authenticated viewers who access the affected configuration pages, potentially leading to data exfiltration and loss of integrity for inventory management operations.
This vulnerability aligns with CWE-79, which classifies Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. It also maps directly to MITRE ATT&CK technique T1059.007, specifically JavaScript execution under the command and control or initial access categories depending on the attacker's ultimate objective. The persistence mechanism places it firmly in the realm of stored attacks where the payload survives across multiple user sessions, increasing detection difficulty for security monitoring tools that may not flag static content as malicious until interaction occurs.
Mitigation strategies must focus on implementing robust input validation and output encoding at both the API layer and the presentation layer. Developers should enforce strict allow-listing for all text fields to ensure only expected characters are accepted, rejecting any input containing script tags or event handlers. Furthermore, applying context-sensitive output encoding is critical; this involves transforming special characters like ampersands, less-than signs, greater-than signs, quotes, and apostrophes into their corresponding HTML entities before rendering them in the browser. Implementing a Content Security Policy header can also serve as an effective defense-in-depth measure by restricting the sources from which scripts can be loaded or executed, thereby neutralizing the impact of any successfully injected payloads even if validation fails. Regular security testing including dynamic application security scanning and manual penetration testing should be integrated into the development lifecycle to identify such flaws early.