Description
The WPBot – AI ChatBot for Live Support, Lead Generation, AI Services plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'conversation' parameter in all versions up to, and including, 8.7.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The action is gated only by a nonce that is localized into every public-facing page via wp_localize_script, rendering the nonce check ineffective as an access control barrier for unauthenticated users.
Published: 2026-09-09
Score: 7.2 High
EPSS: < 1% Very Low
KEV: No
Impact: Stored Cross‑Site Scripting
Action: Patch Immediately
AI Analysis

Impact

The WPBot – AI ChatBot for Live Support, Lead Generation, AI Services plugin for WordPress is vulnerable to stored cross‑site scripting through its "conversation" parameter. The flaw arises from insufficient input sanitization and output escaping. Attackers can inject arbitrary JavaScript that is persisted in the database and executed whenever a page containing the conversation data is loaded by a user.

Affected Systems

The vulnerability affects all releases of the quantumcloud WPBot plugin up to and including version 8.7.3. Hosts running any of these versions are susceptible; the flaw is isolated to the plugin and does not impact core WordPress components.

Risk and Exploitability

The base CVSS score of 7.2 places this flaw in the high‑severity category. Because the flaw does not require authentication and the public‑facing nonce is ineffective as an access‑control guard, the attack can be carried out by unauthenticated users. The EPSS score is not available, so the probability of exploitation cannot be quantified. The vulnerability is not yet listed in the CISA KEV catalog.

Generated by OpenCVE AI on September 9, 2026 at 11:57 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the WPBot plugin to any version newer than 8.7.3 to remove the stored XSS flaw.
  • If an upgrade is not possible immediately, disable the WPBot plugin on public‑facing pages or configure it to be accessible only to authenticated users to prevent the vulnerable parameter from being exposed.
  • As a temporary containment measure, apply a Content‑Security‑Policy header that blocks inline scripts or restricts script sources to trusted origins, reducing the impact of any stored payloads that remain.

Generated by OpenCVE AI on September 9, 2026 at 11:57 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

References
Link Providers
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/functions.php#L1922 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/js/admin.js#L86 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L564 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L566 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L708 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L866 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/qcld-wpwbot.php#L613 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/functions.php#L1922 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/js/admin.js#L86 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L564 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L566 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L708 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L866 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/qcld-wpwbot.php#L613 cve-icon cve-icon
https://plugins.trac.wordpress.org/changeset?reponame=&old=3679725%40chatbot&new=3679725%40chatbot cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/710fb372-4b7e-43e3-86a7-417143536f43?source=cve cve-icon cve-icon
History

Thu, 10 Sep 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Quantumcloud
Quantumcloud wpbot – Ai Chatbot For Live Support, Lead Generation, Ai Services
Wordpress
Wordpress wordpress
Vendors & Products Quantumcloud
Quantumcloud wpbot – Ai Chatbot For Live Support, Lead Generation, Ai Services
Wordpress
Wordpress wordpress

Wed, 09 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 09 Sep 2026 05:45:00 +0000

Type Values Removed Values Added
Description The WPBot – AI ChatBot for Live Support, Lead Generation, AI Services plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'conversation' parameter in all versions up to, and including, 8.7.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The action is gated only by a nonce that is localized into every public-facing page via wp_localize_script, rendering the nonce check ineffective as an access control barrier for unauthenticated users.
Title WPBot <= 8.7.3 - Unauthenticated Stored Cross-Site Scripting via 'conversation' Parameter
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}

Subscriptions

Quantumcloud Wpbot – Ai Chatbot For Live Support, Lead Generation, Ai Services
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-09-09T16:02:52.544Z

Reserved: 2026-08-31T19:43:55.434Z

Link: CVE-2026-83593

cve-icon Vulnrichment

Updated: 2026-09-09T15:51:47.773Z

cve-icon NVD

Status : Deferred

Published: 2026-09-09T06:17:17.670

Modified: 2026-09-09T17:17:48.013

Link: CVE-2026-83593

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-10T21:30:12Z

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')