Description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Tangible Loops & Logic.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.5",
  "pubDate": "2026-08-28T08:16:58.830Z",
  "pubdate": "2026-08-28T08:16:58.830Z",
  "executiveSummary": "A Cross-Site Scripting (XSS) vulnerability exists within the Tangible Loops & Logic plugin, categorized under CWE-79 (Improper Neutralization of Input During Web Page Generation).\nThe vulnerability allows an unauthenticated or authenticated attacker to inject malicious client-side scripts into web pages rendered by the affected software.\nThe primary impact involves the execution of arbitrary JavaScript in the context of the user's browser session, potentially leading to unauthorized actions, session hijacking, or sensitive data exfiltration.\nThe vulnerability affects the Tangible Loops & Logic product, exposing users to risks associated with malicious script execution when interacting with crafted URLs or injected inputs.\nExploitation generally requires convincing a targeted user to interact with a malicious link or a compromised page containing the injected payload.\nSuccessful exploitation bypasses standard security controls by leveraging the trusted relationship between the web server and the victim's browser, effectively executing code within the document object model (DOM) of the application.",
  "technicalDetails": "The vulnerability stems from the improper neutralization of user-supplied input before it is rendered as part of a web page within the Tangible Loops & Logic framework. The application fails to adequately encode or sanitize data retrieved from HTTP requests or stored parameters prior to reflecting it back to the client.\nThe root cause lies in the application's template rendering engine or output generation routines, which permit the injection of non-filtered HTML or JavaScript elements. When the application receives an input that contains script tags or event handlers (such as 'onload', 'onerror', or 'onclick'), it embeds these directly into the HTML response document.\nThe attack flow proceeds as follows: 1) An attacker identifies an input parameter or a path-based variable processed by Tangible Loops & Logic that is reflected in the server response. 2) The attacker crafts a malicious payload, typically JavaScript intended to perform unauthorized actions such as document.cookie theft or redirection. 3) The attacker delivers the payload to the victim, often via a crafted URL containing the script injection. 4) The victim's browser, upon rendering the crafted response from the server, interprets the injected payload as legitimate application code due to the lack of proper context-aware output encoding.\nThis vulnerability constitutes a reflected XSS attack. The payload is not necessarily persisted on the server, but rather exists in the transient request and response cycle, requiring the victim to initiate the interaction. The execution context is the user's browser, meaning the impact is limited to the privileges of the active session. If the victim is a privileged administrator, the attacker could theoretically perform administrative functions, modify plugin settings, or create new administrative accounts through a series of automated requests.\nExploitation is facilitated by the application's failure to implement Content Security Policy (CSP) headers, which would otherwise restrict the sources from which scripts can be loaded or executed. Without robust output encoding (e.g., converting '<' to '&lt;') and strict input validation, the application remains susceptible to persistent or reflected script injection, depending on where the input data originates and how it is subsequently persisted or rendered."
}