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CVE-2025-15623 is a critical vulnerability in Sparx Systems Pty Ltd.’s Sparx Pro Cloud Server. The flaw allows an unauthenticated, network-based attacker to retrieve the database password in plaintext. This is classified under CWE-359 (Exposure of Private Personal Information to an Unauthorized Actor) and CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere).
The vulnerability stems from a Broken Access Control issue in how the server communicates with the database. The application fails to properly validate permissions, allowing a low-privileged or unauthenticated user to execute arbitrary SQL queries. The weakness lies within an unknown functionality of the product. By sending a crafted network request to the Sparx Pro Cloud Server, an attacker can trigger the system to respond with the database password in plaintext. No authentication or user interaction is required, and the attack complexity is low. The vulnerability has a CVSS v4.0 base score of 9.3, categorizing it as Critical. Successful exploitation enables unauthorized database access, which can lead to large-scale data breaches and complete control over the affected system.
The issue affects Sparx Pro Cloud Server, with version 6.0.163 explicitly identified as vulnerable. The vulnerability was discovered by Pasi Orovuo, Henri Hämäläinen, and Samu Ahvenainen of Solita Oy. As of June 2, 2026, no patch is available. The NVD published details on April 17, 2026, and as of the last modification date, no patch has been released.
DailyCVE Form:
Platform: Sparx Pro Cloud Server
Version: 6.0.163
Vulnerability : Authentication bypass via
Severity: 9.3 (Critical)
date: April 17, 2026
Prediction: Patch expected Q3 2026
Analytics
What Undercode Say:
Check for exposed configuration endpoints curl -k -X GET https://target-sparx-server.com/api/config/database If the above fails, scan for common information disclosure paths gobuster dir -u https://target-sparx-server.com -w /usr/share/wordlists/common.txt -x php,asp,aspx,txt Attempt to query the database using the retrieved credentials (after exploitation) mysql -h database-host -u sa -p'[bash]' -D masterdb
The vulnerability likely resides in an API endpoint that is not properly secured. Attackers would enumerate the server for configuration or status pages. The following `curl` command simulates a potential request to an exposed endpoint (a common cause for this issue):
curl -k -s -o /dev/null -w "%{http_code}" https://target-sparx-server.com/status?type=full
A successful exploit would return a HTTP 200 with a JSON payload containing the `password` field in plaintext.
Exploit:
Due to the lack of public proof-of-concept (PoC) code, exploitation requires manual reconnaissance. The attack vector is network-based.
1. Reconnaissance: Identify the target Sparx Pro Cloud Server instance.
2. Craft Request: Send a specially crafted HTTP/HTTPS request to a vulnerable, yet unknown, endpoint.
3. Capture Response: Extract the database password from the server’s plaintext response.
4. Access Database: Use the captured credentials to authenticate to the underlying database, bypassing application-level controls.
Protection:
As no official patch is available, immediate mitigation actions are required:
1. Network Isolation: Restrict network access to the Sparx Pro Cloud Server using firewalls. Isolate the server from the internet to prevent external unauthenticated requests.
2. Rotate Credentials: Change all database passwords used by the application immediately.
3. Monitor Logs: Actively monitor server and database logs for any signs of unauthorized access or unusual queries.
4. Web Application Firewall (WAF): Deploy a WAF to block requests containing patterns indicative of configuration file access or SQL injection attempts on vulnerable endpoints.
5. Vendor Update: Continuously monitor Sparx Systems advisory pages for the release of a final patch.
Impact:
Successful exploitation allows an unauthenticated attacker to obtain the database password in plaintext. The immediate impact is unauthorized database access, enabling the attacker to:
Exfiltrate Sensitive Data: Access and steal all information stored in the database.
Data Manipulation: Modify or delete critical business data.
Lateral Movement: Use the database server as a pivot point to attack other internal network systems.
System Control: Potentially gain control over the entire affected system, leading to full compromise.
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Sources:
Reported By: nvd.nist.gov
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