Description

Unauthenticated Cross Site Scripting (XSS) in BBQ Pro <= 3.9 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.1",
  "pubDate": "2026-08-19T13:18:06.607Z",
  "pubdate": "2026-08-19T13:18:06.607Z",
  "executiveSummary": "An unauthenticated Cross-Site Scripting (XSS) vulnerability has been identified in the BBQ Pro plugin, specifically affecting versions 3.9 and prior. This security flaw enables remote, unauthenticated attackers to inject malicious client-side scripts, typically JavaScript, into vulnerable web pages rendered by the application and viewed by unsuspecting users.\nThe primary impact of this vulnerability includes session hijacking, credential theft, malicious redirection, and the potential manipulation of DOM content within the context of the victim's browser session. Because the vulnerability requires no authentication, any external threat actor interacting with the exposed input vectors can initiate exploitation over the network.\nThe risk implication is critical for affected systems, as successful exploitation undermines the integrity and confidentiality of user interactions with the WordPress site running the BBQ Pro plugin. Remediation relies strictly on updating the vulnerable software component to a patched version once released by the vendor.",
  "technicalDetails": "The vulnerability stems from improper neutralization of user-supplied input prior to rendering it back to the client, a classic root cause for Cross-Site Scripting (XSS) flaws. Specifically, parameters or request variables processed by the BBQ Pro plugin fail to undergo adequate context-aware output encoding or strict input sanitization before being reflected in the HTTP response.\nThe affected component resides within the BBQ Pro plugin codebase for versions <= 3.9. Due to the lack of authentication requirements, network exposure is absolute; any remote attacker can craft an HTTP request containing malicious JavaScript payloads designed to target the application.\nThe step-by-step attack flow proceeds as follows: First, the attacker identifies a vulnerable input vector exposed by BBQ Pro that reflects unescaped user input in the server response. Second, the attacker crafts a malicious URL or HTTP request embedding the XSS payload, such as a script tag containing arbitrary JavaScript code or event handlers like onload or onerror. Third, the attacker induces a legitimate user or administrator to interact with the malicious URL via phishing, drive-by methods, or direct payload delivery.\nUpon interaction, the victim's browser parses the malicious payload as legitimate code and executes it within the security context of the vulnerable domain. The payload behavior can range from exfiltrating sensitive session cookies and local storage data to performing unauthorized actions on behalf of the authenticated user. Post-exploitation impact depends heavily on the privileges of the victimized user, potentially leading to administrative account compromise if an administrator views the injected payload."
}