CVE-2026-13731 Details.
WPBot <= 8.4.9 - Cross-Site Scripting
Atlas does not check this one. Needs requests that change data.
To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check.
About CVE-2026-13731. What It Means.
WPBot <= 8.4.9 is vulnerable to stored cross-site scripting via the conversation parameter in the qcld_wb_chatbot_conversation_save AJAX action. The AJAX nonce (qcsecretbotnonceval123qc) is publicly emitted on every frontend page via wp_localize_script under the ajax_nonce key, making it freely obtainable by unauthenticated visitors.
The conversation parameter is saved to the database without sanitization and rendered unsanitized in the admin chat session view, causing store…
Affected Product. What Is Hit.
- Vendor
- quantumcloud
- Product
- Quantumcloud Chatbot
References. Where To Read More.
FAQ
Common Questions.
WPBot <= 8.4.9 - Cross-Site Scripting. WPBot <= 8.4.9 is vulnerable to stored cross-site scripting via the conversation parameter in the qcld_wb_chatbot_conversation_save AJAX action. The AJAX nonce (qcsecretbotnonceval123qc) is publicly emitted on every frontend page via wp_localize_script under the ajax_nonce key, making it freely obtainable by unauthenticated visitors. The conversation parameter is saved to the database without sanitization and rendered unsanitized in the admin chat session view, causing store…
No. To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check. The facts about CVE-2026-13731 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-13731 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Quantumcloud Chatbot to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-13731. Atlas does not run a check for it, so nothing here says whether a particular site is affected.