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CVE-2026-94378— SupportCandy <= 3.5.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'name' Parameter

Quick assessment

Affected
psmplugins SupportCandy – AI Customer Support Ticket System & Live Chatbot Agent
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 插件 SupportCandy – AI Customer Support Ticket System & Live Chatbot Agent 存在存储型跨站脚本（XSS）漏洞。该漏洞影响所有 3.5.3 及以下版本，原因是插件在处理 'name' 参数时，输入清理（input sanitization）和输出转义（output escaping）不充分。 由于这一缺陷，拥有订阅者（subscriber）级别及以上权限的认证攻击者，可以在网页中注入任意恶意 Web 脚本。当其他用户访问被植入恶

CVSS 6.4 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
psmplugins SupportCandy – AI Customer Support Ticket System & Live Chatbot Agent ≤ 3.5.3 affected
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I. Basic Information for CVE-2026-94378

Vulnerability Information
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Vulnerability Title
SupportCandy <= 3.5.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'name' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The SupportCandy – AI Customer Support Ticket System & Live Chatbot Agent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'name' parameter in all versions up to, and including, 3.5.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This exploit chain requires the 'Register user if not exists' setting to be disabled, which is its default configuration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
psmplugins SupportCandy – AI Customer Support Ticket System & Live Chatbot Agent 0 ~ 3.5.3 -

II. Public POCs for CVE-2026-94378

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III. Intelligence Information for CVE-2026-94378

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Patches & Fixes for CVE-2026-94378 (5)

News Coverage for CVE-2026-94378 (1)

IV. Related Vulnerabilities

Same product: SupportCandy – AI Customer Support Ticket System & Live Chatbot Agent
Same vendor: psmplugins
Same weakness: CWE-79

V. Comments for CVE-2026-94378

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