Key points
- Eptura Archibus versions prior to 2025.02 contain a critical vulnerability rated 9.6 by the National Vulnerability Database.
- Attackers can upload JSPX files containing malicious code via the report export feature, leading to potential remote code execution.
- The flaw can be chained with an authentication bypass, allowing unauthenticated users to potentially execute commands on the server.
Security teams should assess their exposure to a critical remote code execution vulnerability in Eptura Archibus installations running versions before 2025.02. The National Vulnerability Database assigned CVE-2026-107188 a CVSS score of 9.6, indicating severe risk. This flaw allows users to upload export reports with arbitrary file contents, effectively turning the application into a vector for server compromise.
The vulnerability stems from insufficient validation of uploaded files within the report export function. According to the NVD record, an attacker can specify JSPX as the file extension for an uploaded report. Because the server processes these files as JavaServer Pages, any code contained within the uploaded file could execute on the backend. This mechanism enables potential command execution on the hosting server.
Chaining with Authentication Bypass
The severity of this issue is amplified by its ability to be chained with other vulnerabilities. The NVD description notes that the upload flaw can be combined with an authentication bypass vulnerability. This combination allows an attacker to run code on the server without needing valid credentials. Such unauthenticated access significantly lowers the barrier for exploitation, making it accessible to threat actors with minimal prior knowledge of the target environment.
Affected Environments
Only installations of Eptura Archibus running versions earlier than 2025.02 are affected by CVE-2026-107188. Organizations using the 2025.02 update or later are not exposed to this specific weakness. System administrators must verify the current version of their Archibus deployment immediately. Any instance identified as pre-2025.02 requires immediate attention to mitigate the risk of remote code execution.
Next steps
Administrators should prioritize verifying the version of Eptura Archibus across their infrastructure. If the software is older than version 2025.02, teams should plan an upgrade to the latest available version as soon as possible. Until an update is applied, consider restricting network access to the Archibus interface. Monitor server logs for unusual file uploads or execution patterns that could indicate exploitation attempts.
Signals worth monitoring
Teams usually detect this type of activity by reviewing web server access logs for unexpected POST requests to report endpoints. Look for uploads of files with JSPX extensions or unusual file sizes that do not match standard report outputs. Check for new executable files appearing in temporary or upload directories on the server. Investigate any outbound network connections from the application server that were not initiated by scheduled tasks or known administrative actions.
Background: Threat actors
Threat actors range from criminal syndicates seeking profit to state-sponsored groups aiming for espionage. Each type uses distinct tactics, techniques and procedures (TTPs) driven by their goals. Knowing the difference helps you prioritize alerts and allocate security resources where they matter most.
Read the full guide: Types of Threat Actors: Motives, Methods, and Defense Strategies
What to do and how to stay safe: Eptura
- Verify the installed version of Eptura Archibus and upgrade to the latest available version if applicable.
- Restrict network access to the Archibus web interface to trusted IP addresses only.
- Monitor web server logs for unauthorized file uploads, especially those with executable extensions.
- Implement web application firewall rules to block requests containing JSPX file extensions.
Step-by-step guide: Emergency Patching Checklist for Critical System Fixes
General security guidance from the SecOps Monitor newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is the CVSS score for CVE-2026-107188?
The National Vulnerability Database rates CVE-2026-107188 as 9.6, which is considered critical.
Which versions of Eptura Archibus are affected?
All versions of Eptura Archibus before 2025.02 are affected by this vulnerability.
Can attackers exploit this flaw without authentication?
Yes, the upload vulnerability can be chained with an authentication bypass to allow unauthenticated code execution.
