What’s Vulnerable › Vulnerabilities

CVE-2026-40866: Horilla: Unauthorized Document Overwrite via File Upload Endpoint

• Severity: high (CVSS 8.6 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-21 · updated 2026-06-17
• Weakness: CWE-284

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.

Affected products

• horilla-opensource horilla: 1.5.0

References

• https://github.com/horilla/horilla-hr/security/advisories/GHSA-q2qh-v828-r4p7
• https://github.com/horilla/horilla-hr/security/advisories/GHSA-q2qh-v828-r4p7

Get alerted when CVE-2026-40866 or the next vulnerability affects your stack