CVE-2026-108059 in ALO Suite
Summary
by MITRE • 11/03/2026
A stored Cross-Site Scripting (XSS) vulnerability in Alosuite that affects the delivery note functionality. Insufficient sanitization and encoding of the specified fields allow JavaScript to be stored, which executes in other users’ browsers when they view the affected records. Exploitation requires authenticated access to the affected functionality. The code can alter the displayed content and perform actions within the context of the victim’s session. The list of features, parameters, and endpoints is as follows:
CVE-2026-108059: Observaciones in ‘/Terceros/Create’;
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Analysis
by VulDB Data Team • 11/03/2026
The vulnerability identified under CVE-2026-108059 represents a critical stored Cross-Site Scripting flaw within the Alosuite enterprise resource planning platform, specifically targeting the delivery note and third-party management modules. This security defect arises from insufficient input validation and output encoding mechanisms applied to the Observaciones field during the creation of new records in the /Terceros/Create endpoint. When an authenticated user submits data containing malicious JavaScript payloads into this specific text area, the application fails to properly sanitize or encode these inputs before persisting them to the backend database. Consequently, when other authorized users subsequently view or interact with the affected third-party record, their browsers render the stored script as part of the page content. This execution occurs within the security context of the victim’s active session, granting the attacker significant leverage over the user's interaction with the application without requiring any direct social engineering beyond initial data entry by a compromised or malicious insider account.
From a technical perspective, this vulnerability is classified under CWE-79, which denotes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The specific nature of this flaw aligns with the Stored XSS variant where the malicious payload is permanently stored on the target server, such as in a database or content management system, and served to other users later. This differs from reflected XSS because it does not require tricking a user into clicking a specially crafted link; instead, the mere act of viewing the compromised record triggers the execution. The lack of proper encoding means that special characters like angle brackets, quotes, and ampersands are passed through directly to the client-side HTML parser, allowing arbitrary JavaScript code injection. This behavior violates fundamental web security principles regarding the separation of data and executable code, a core tenet emphasized in OWASP guidelines for secure coding practices.
The operational impact of this vulnerability is severe due to its potential for widespread exploitation within an organization’s workflow. Since Alosuite handles critical business operations including delivery notes and third-party management, any compromise can lead to significant financial or reputational damage. An attacker who successfully exploits CVE-2026-108059 can perform actions on behalf of the victim user, such as stealing session cookies, capturing authentication tokens, or performing unauthorized transactions within the application. Furthermore, the script can alter the displayed content, potentially displaying misleading information to other users and disrupting business processes. In a multi-user environment, this vulnerability serves as an entry point for further attacks, including credential harvesting via keyloggers embedded in the injected scripts or phishing campaigns disguised as legitimate system alerts. The requirement for authenticated access limits the attack surface slightly but does not mitigate the risk entirely, as insider threats or compromised credentials can easily trigger the exploit.
To address this vulnerability and align with industry best practices such as MITRE ATT&CK technique T1059 which covers Command and Scripting Interpreter execution via web applications, immediate remediation is required. The primary mitigation involves implementing strict input validation on the server side for all fields in the /Terceros/Create endpoint, ensuring that only expected character sets are accepted. Additionally, output encoding must be applied consistently when rendering user-supplied data in HTML contexts to prevent browser interpretation of injected scripts. Context-aware encoding strategies should be employed to handle different types of content such as HTML body attributes or JavaScript variables separately. Deploying a Web Application Firewall with rules tuned for XSS detection can provide an additional layer of defense by blocking malicious payloads before they reach the application logic. Regular security audits and penetration testing focusing on input handling in critical modules like delivery notes are essential to maintain long-term resilience against similar injection-based attacks.