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CVE-2026-83593— WPBot <= 8.7.3 - Unauthenticated Stored Cross-Site Scripting via 'conversation' Parameter

Quick assessment

Affected
quantumcloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress WPBot是WordPress基金会开源的一款功能丰富的专用AI聊天机器人。 WordPress WPBot 8.7.3及之前版本存在跨站脚本漏洞，该漏洞源于对'conversation'参数的输入清理和输出转义不足，且访问控制仅依赖可公开获取的nonce，导致nonce检查无法有效阻止未认证攻击者，攻击者可在页面中注入任意Web脚本，当用户访问被注入页面时执行。

CVSS 7.2 · High EPSS 0.53% · P45

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
quantumcloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services ≤ 8.7.3 affected
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I. Basic Information for CVE-2026-83593

Vulnerability Information
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Vulnerability Title
WPBot <= 8.7.3 - Unauthenticated Stored Cross-Site Scripting via 'conversation' Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress WPBot 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress WPBot是WordPress基金会开源的一款功能丰富的专用AI聊天机器人。 WordPress WPBot 8.7.3及之前版本存在跨站脚本漏洞，该漏洞源于对'conversation'参数的输入清理和输出转义不足，且访问控制仅依赖可公开获取的nonce，导致nonce检查无法有效阻止未认证攻击者，攻击者可在页面中注入任意Web脚本，当用户访问被注入页面时执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
quantumcloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services 0 ~ 8.7.3 -

II. Public POCs for CVE-2026-83593

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III. Intelligence Information for CVE-2026-83593

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Patches & Fixes for CVE-2026-83593 (1)

Security Blog Posts for CVE-2026-83593 (1)

Vendor Pages for CVE-2026-83593 (2)

IV. Related Vulnerabilities

Same product: WPBot – AI ChatBot for Live Support, Lead Generation, AI Services
Same vendor: quantumcloud
Same weakness: CWE-79