CVE-2026-118046

JS Help Desk <= 5.0.2 - Authenticated (Subscriber+) Stored DOM-Based Cross-Site Scripting via 'jsticket_message' Ticket Field via VenoBox data-title

2026-11-06 13:58
UKO

Strategic Overview

Status
Patched in 5.0.3
Affected Plugin
JS Help Desk – AI-Powered Support & Ticketing System
Affected Version
<= 5.0.2
CVSS
6.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation
CVE
CVE-2026-118046
View all JS Help Desk – AI-Powered Support & Ticketing System vulnerabilities

At a glance

CVE-2026-118046 is a medium-severity Improper Neutralization of Input During Web Page Generation vulnerability in the JS Help Desk WordPress plugin, affecting versions <= 5.0.2. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 5.0.3; sites on affected versions should update now. Disclosed November 2026, reported by UKO.

Vulnerability Overview

The JS Help Desk – AI-Powered Support & Ticketing System plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'jsticket_message' parameter in all versions up to, and including, 5.0.2 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. The payload fires specifically when an administrator or agent opens the affected ticket and the page initializes VenoBox, which reads the browser-decoded data-title attribute and passes it to jQuery .html(), making routine ticket review the trigger condition.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation

JS Help Desk <= 5.0.2 carries this weakness at jsticket_message, and reaching it takes an account at Subscriber level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For JS Help Desk the fix is 5.0.3: builds <= 5.0.2 are affected, anything from 5.0.3 onward is not.

Remediation

Update to version 5.0.3, or a newer patched version

How does WordSec protect against this?

An attacker needs Subscriber access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: JS Help Desk 5.0.3 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-118046https://www.wordfence.com/threat-intel/vulnerabilities/id/17f4961c-394b-46dc-b228-14ce81c92009https://nvd.nist.gov/vuln/detail/CVE-2026-118046

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C