JS Help Desk lets visitors attach files to other users' tickets

JS Help Desk before 3.1.4 exposes a front-end request dispatcher without authentication, a nonce check or ticket-ownership validation. An unauthenticated visitor can submit a file accepted by the plugin and select another user's support ticket as its destination, causing the file to be stored and attached to that ticket. The plugin limits uploads to its inert allowed extensions, so the published record does not establish executable-file upload, but the operation can tamper with support records and place attacker content in a trusted workflow.

CVE / CNA score 7.5 CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0

NVD score Pending NVD has not published its own CVSS assessment.

Component: JS Help Desk
Plugin slug: js-help-desk
Affected: < 3.1.4
Safe version: 3.1.4
Published: Jul 31, 2026
Weakness: CWE-862 — Missing Authorization

This CVE was published Jul 31, 2026 and is one of 13 known issues for this plugin.

What to do

Update, patch or deactivate.

Update JS Help Desk to 3.1.4 or later. Review recent ticket attachments for files added without a corresponding authenticated user or support interaction, remove confirmed unwanted files, and notify affected support users if ticket integrity was compromised.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The JS Help Desk WordPress plugin before 3.1.4 does not perform any authorization, nonce, or ownership check on a front-end request dispatcher, allowing unauthenticated users to upload files (limited to the JS Help Desk WordPress plugin before 3.1.4's inert allowed extensions) and attach them to arbitrary users' support tickets.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Primary and upstream sources

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