Horilla: Unauthorized Document Overwrite via File Upload Endpoint
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| horilla-opensource | horilla | 1.5.0 | — | No fix listed | CNA |
- horilla Vendorhorilla-opensource Affected 1.5.0 Fixed in — No fix listed CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:horilla:horilla:*:*:*:*:*:*:*:* | — | — | horilla-opensource |
- cpe:2.3:a:horilla:horilla:*:*:*:*:*:*:*:* Versions — — ·horilla-opensource
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-40866
More horilla-opensource vulnerabilities
- TI-2025-37271 Horrila Stored XSS Vulnerability via Ticket Comment section CVSS 3.1CRITICAL 9.9
- TI-2026-63868 Horilla: Authenticated RCE in Horilla List-View Export CVSS 3.1HIGH 8.8
- TI-2026-50095 Horilla: Reflected Cross-Site Scripting (XSS) in Employee Filter View CVSS 4.0HIGH 8.5
- TI-2025-31025 Horilla Unauthorized Access to Candidate Resume Files Due to Broken Access Control CVSS 3.1HIGH 7.5
- TI-2026-29521 Horilla: Insecure Direct Object Reference at `/employee/view-file/<int:id> CVSS 4.0HIGH 7.1
- TI-2026-19348 Horilla has HTML Injection Issue that, with Phishing, Leads to Account Takeover CVSS 3.1HIGH 8.0
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences