Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-81825— Simple Ajax Chat <= 20260811 - Unauthenticated Stored Cross-Site Scripting

Quick assessment

Affected
specialk Simple Ajax Chat – Add a Fast, Secure Chat Box
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.

Simple Ajax Chat – Add a Fast, Secure Chat Box（一个为 WordPress 添加快速、安全聊天框的插件）存在存储型跨站脚本（Stored Cross-Site Scripting）漏洞，受影响版本为 20260811 及之前所有版本。该漏洞由输入数据未充分清理和输出未正确转义导致，使得未认证的攻击者可以向页面注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将自动执行。此外，用于保护聊天消息提交的 nonce（一次性令牌）在聊天页面上是公开可见的，因此作为身份验

CVSS 7.2 · High

Possible ATT&CK Techniques 1 AI

T1059.003 · Windows Command Shell
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-81825

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Simple Ajax Chat <= 20260811 - Unauthenticated Stored Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Simple Ajax Chat – Add a Fast, Secure Chat Box plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Chat Message in all versions up to, and including, <= 20260811 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 nonce protecting chat message submission is publicly visible on the chat page, rendering it ineffective as an authentication barrier and allowing fully unauthenticated attackers to submit malicious messages that are stored persistently and rendered to all visitors on every page load.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
specialk Simple Ajax Chat – Add a Fast, Secure Chat Box 0 ~ 20260811 -

II. Public POCs for CVE-2026-81825

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-81825

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-81825 (1)

Vendor Advisories for CVE-2026-81825 (1)

Vendor Pages for CVE-2026-81825 (2)

Other References for CVE-2026-81825 (1)

Other References for CVE-2026-81825 (1)

IV. Related Vulnerabilities

Same product: Simple Ajax Chat – Add a Fast, Secure Chat Box
Same vendor: specialk
Same weakness: CWE-79

V. Comments for CVE-2026-81825

No comments yet

Leave a comment