Description

Unauthenticated Cross Site Scripting (XSS) in GeekyBot <= 1.2.6 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.1",
  "pubDate": "2026-08-13T14:17:02.680Z",
  "pubdate": "2026-08-13T14:17:02.680Z",
  "executiveSummary": "An unauthenticated Cross-Site Scripting (XSS) vulnerability has been identified in GeekyBot versions <= 1.2.6. This security flaw enables remote attackers to inject malicious client-side scripts, typically written in JavaScript, into web pages rendered by unsuspecting users visiting the affected application.\nThe primary impact of this vulnerability includes session hijacking, credential theft, redirection to malicious domains, and unauthorized actions performed within the context of the victim's authenticated session. The affected product is GeekyBot, specifically in versions 1.2.6 and below.\nThe risk implication is significant as the vulnerability can be exploited without requiring any prior authentication or elevated privileges, lowering the barrier to entry for potential threat actors. Attackers only require network access to the target web application to deliver the malicious payload.\nExploitation requirements necessitate that a user interacts with the crafted input or visits a specifically manipulated URL containing the malicious payload, which then executes within their browser environment.",
  "technicalDetails": "The vulnerability stems from improper input validation and insufficient output encoding within the GeekyBot application for versions <= 1.2.6. Specifically, user-supplied data is processed and reflected back to the client without adequate sanitization, allowing arbitrary HTML or JavaScript code to be injected into the Document Object Model (DOM).\nThe vulnerable component handles incoming HTTP requests containing parameters that are subsequently rendered in the application interface. Because the application lacks contextual output encoding mechanisms, the browser interprets the injected strings as executable code rather than plain text.\nThe attack flow proceeds as follows: An unauthenticated attacker crafts a malicious URI or HTTP request containing a payload designed to trigger script execution, such as a script tag or an event handler attribute (e.g., onerror, onload). The attacker then induces a victim to click the malicious link or visit the compromised endpoint via social engineering or other delivery vectors.\nUpon receiving the request, the vulnerable server processes the input and includes the unescaped payload in the HTTP response. The victim's browser parses the response and executes the injected script within the security context of the origin site. Because the execution occurs locally on the client side, the script gains access to sensitive objects such as document.cookie, localStorage, and session tokens.\nThe privilege requirements are negligible, as the attack is entirely unauthenticated and exposes the application to remote network-based exploitation. Post-exploitation impact encompasses full compromise of the victim's session integrity, capability to perform unauthorized state-changing operations on behalf of the user, and potential defacement of the application interface."
}