Auth bypass in Faveo Helpdesk
CVE-2026-78434
A flaw has been found in Faveo Helpdesk up to 2.0.3. This impacts the function FormController::post_ticket_reply of the file app/Http/Controllers/Client/helpdesk/FormController.php of the component post-ticket-reply Endpoint. This manipulation causes missing authentication. The attack can be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.007 (52.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Faveo Helpdesk — versions 2.0.0, 2.0.1, 2.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/394712 (technical-description, vdb-entry)
- vuldb.com/vuln/394712/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-78434 (third-party-advisory)
- vuldb.com/submit/886394 (third-party-advisory)
- github.com/faveosuite/faveo-helpdesk/issues/8346 (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2026-78434?
- CVE-2026-78434 is a medium-severity vulnerability in Faveo Helpdesk, classified under Improper Authentication. CVSS score: 6.5/10. Published 2026-08-24.
- How severe is CVE-2026-78434?
- Medium severity. CVSS v3 base score is 6.5 out of 10.