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CVE-2026-78434— Faveo Helpdesk post-ticket-reply Endpoint FormController.php post_ticket_reply missing authentication

Quick assessment

Affected
Faveo Helpdesk
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.

在 Faveo Helpdesk 2.0.3 及更早版本中发现了一个漏洞。该漏洞影响文件 app/Http/Controllers/Client/helpdesk/FormController.php 中 FormController::post_ticket_reply 函数（属于 post-ticket-reply 端点组件）。该缺陷导致缺少身份验证机制。攻击者可远程发起攻击，相关利用代码已公开，可能被滥用。项目方已通过 Issue 报告早期知悉该问题，但至今尚未作出回应。

CVSS 6.5 · Medium EPSS 0.42% · P35

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
Faveo Helpdesk 2.0.0 affected
2.0.1 affected
2.0.2 affected
2.0.3 affected
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I. Basic Information for CVE-2026-78434

Vulnerability Information
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Vulnerability Title
Faveo Helpdesk post-ticket-reply Endpoint FormController.php post_ticket_reply missing authentication
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Faveo Helpdesk 2.0.0 cpe:2.3:a:faveo:helpdesk:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-78434

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-78434

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Vendor Advisories for CVE-2026-78434 (2)

News Coverage for CVE-2026-78434 (1)

Other References for CVE-2026-78434 (1)

IV. Related Vulnerabilities

Same product: Helpdesk
Same vendor: Faveo
Same weakness: CWE-306

V. Comments for CVE-2026-78434

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