Description

The NextScripts: Social Networks Auto-Poster WordPress plugin before 4.4.8 does not escape some of the query-string parameters it reflects back on one of its admin pages, allowing attackers to perform Reflected Cross-Site Scripting attacks against logged-in users such as administrators who are tricked into opening a crafted link.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.1",
  "pubDate": "2026-08-19T06:17:34.940Z",
  "pubdate": "2026-08-19T06:17:34.940Z",
  "executiveSummary": "An unauthenticated Reflected Cross-Site Scripting (XSS) vulnerability exists within the NextScripts: Social Networks Auto-Poster WordPress plugin prior to version 4.4.8.\nThe vulnerability arises due to the improper sanitization and escaping of query-string parameters that are dynamically reflected back to the user within an administrative interface.\nAn external attacker capable of social engineering can craft a malicious URL containing arbitrary JavaScript payloads and trick a privileged user, such as an administrator, into clicking the link.\nUpon successful execution within the victim's browser session, the injected script executes in the security context of the authenticated administrative user, potentially leading to full administrative compromise of the WordPress site.\nThe primary risk implication is session hijacking, arbitrary administrative action execution, and potential escalation to remote code execution through plugin or theme manipulation.\nExploitation requires user interaction via a crafted link and targets authenticated administrators.",
  "technicalDetails": "The vulnerability stems from a lack of proper input validation and output encoding on specific query-string parameters processed by the NextScripts: Social Networks Auto-Poster plugin.\nThe affected component is an administrative page handled by the plugin, which reads input directly from the Hypertext Transfer Protocol (HTTP) query string and echoes the unescaped values back into the Document Object Model (DOM) of the HTTP response.\nAffected versions include all iterations of the NextScripts: Social Networks Auto-Poster WordPress plugin prior to version 4.4.8.\nFrom an authentication and privilege perspective, the endpoint itself may be restricted to administrative roles, but the reflected XSS vector permits exploitation via Cross-Site Request Forgery (CSRF)-like delivery or direct victim interaction, leveraging the victim's existing session privileges.\nThe attack flow proceeds as follows: First, the attacker identifies the vulnerable query-string parameters reflected on the administrative page. Second, the attacker crafts a malicious URL embedding an arbitrary JavaScript payload within the vulnerable parameter. Third, the attacker delivers this crafted link to a targeted administrator via phishing, malicious framing, or other social engineering vectors. Fourth, when the authenticated administrator accesses the malicious URL, the server processes the request and returns an HTTP response containing the unescaped payload. Fifth, the victim's browser parses the response and executes the injected script within the context of the vulnerable WordPress admin domain.\nPayload behavior includes accessing sensitive Document Object Model elements, reading session cookies (if not protected by HttpOnly flags), issuing unauthorized Asynchronous JavaScript and XML (AJAX) or REST Application Programming Interface (API) requests, and performing administrative actions such as creating new rogue accounts or installing malicious plugins.\nPost-exploitation impact encompasses full administrative takeover of the WordPress instance, persistent unauthorized access, and potential compromise of the underlying host environment depending on server configurations."
}