CVE-2026-40866— Horilla: Unauthorized Document Overwrite via File Upload Endpoint
Quick assessment
Affected
horilla-opensource horilla
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.
Horilla是Horilla公司的一款免费的开源人力资源软件。 Horilla 1.5.0版本存在安全漏洞，该漏洞源于员工文档上传端点存在不安全的直接对象引用，可能导致任何经过身份验证的用户覆盖、替换或损坏其他员工的文档。
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I. Basic Information for CVE-2026-40866
Vulnerability Information
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Vulnerability Title
Horilla: Unauthorized Document Overwrite via File Upload Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Horilla is a free and open source Human Resource Management System (HRMS). In 1.5.0, an insecure direct object reference in the employee document upload endpoint allows any authenticated user to overwrite or replace or corrupt another employee’s document by changing the document ID in the upload request. This enables unauthorized modification of HR records.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Horilla 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Horilla是Horilla公司的一款免费的开源人力资源软件。 Horilla 1.5.0版本存在安全漏洞，该漏洞源于员工文档上传端点存在不安全的直接对象引用，可能导致任何经过身份验证的用户覆盖、替换或损坏其他员工的文档。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| horilla-opensource | horilla | 1.5.0 | - |
|
II. Public POCs for CVE-2026-40866
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-40866 (1)
Same Patch Batch · horilla-opensource · 2026-04-21 · 3 CVEs total
| CVE-2026-40865 | Horilla: Insecure Direct Object Reference at `/employee/view-file/<int:id> | |
| CVE-2026-40867 | Horilla: Unauthorized Helpdesk Attachment Access via Attachment ID Manipulation |
IV. Related Vulnerabilities
Same product: horilla
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CVE-2026-40867
Horilla: Unauthorized Helpdesk Attachment Access via Attachm -
CVE-2026-40865
Horilla: Insecure Direct Object Reference at `/employee/view -
CVE-2026-3050
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CVE-2026-24039
Horilla's Improper Access Control Allows Employees to Auto-A
Same vendor: horilla-opensource
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CVE-2026-40867
Horilla: Unauthorized Helpdesk Attachment Access via Attachm -
CVE-2026-40865
Horilla: Insecure Direct Object Reference at `/employee/view -
CVE-2026-3050
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CVE-2026-3049
horilla-opensource horilla Query Parameter global_search.py -
CVE-2026-24039
Horilla's Improper Access Control Allows Employees to Auto-A
Same weakness: CWE-284
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V. Comments for CVE-2026-40866
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