EUVD-2026-9990

Comprehensive Technical Analysis of EUVD-2026-9990

1. Vulnerability Assessment and Severity Evaluation

The vulnerability in Ghostfolio, an open-source wealth management software, allows an attacker to exploit the manual asset import feature to perform a full-read Server-Side Request Forgery (SSRF). This vulnerability can enable the exfiltration of sensitive cloud metadata (Instance Metadata Service - IMDS) or probe internal network services. The severity of this vulnerability is rated with a CVSS Base Score of 9.3, indicating a critical risk.

CVSS Vector Breakdown:

• AV:N (Network Vector): The vulnerability can be exploited remotely over the network.
• AC:L (Low Complexity): The attack requires low skill or resources to exploit.
• PR:N (No Privileges Required): No authentication is required to exploit the vulnerability.
• UI:N (No User Interaction): No user interaction is required for the attack to succeed.
• S:C (Changed Scope): The vulnerability affects resources beyond the security scope managed by the security authority.
• C:H (High Confidentiality Impact): There is a high impact on the confidentiality of the data.
• I:L (Low Integrity Impact): There is a low impact on the integrity of the data.
• A:N (No Availability Impact): There is no impact on the availability of the system.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• SSRF Exploitation: An attacker can craft a malicious request to the manual asset import feature, causing the server to make unauthorized requests to internal services or cloud metadata endpoints.
• Data Exfiltration: By exploiting the SSRF vulnerability, an attacker can exfiltrate sensitive information such as cloud instance metadata, which may include credentials, configuration details, and other sensitive data.
• Internal Network Probing: The attacker can use the SSRF to probe internal network services, potentially discovering other vulnerable systems or services within the network.

Exploitation Methods:

• Crafting Malicious Requests: The attacker can send specially crafted HTTP requests to the manual asset import endpoint, manipulating the server to perform unauthorized actions.
• Automated Tools: Attackers may use automated tools to scan for and exploit SSRF vulnerabilities, making it easier to target multiple systems simultaneously.

3. Affected Systems and Software Versions

Affected Systems:

• All systems running Ghostfolio versions prior to 2.245.0 are vulnerable to this SSRF attack.

Software Versions:

• Ghostfolio versions < 2.245.0

4. Recommended Mitigation Strategies

Immediate Actions:

• Upgrade Software: Upgrade to Ghostfolio version 2.245.0 or later, which includes the patch for this vulnerability.
• Network Segmentation: Implement network segmentation to limit the exposure of internal services and cloud metadata endpoints.
• Firewall Rules: Configure firewall rules to restrict access to sensitive internal services and cloud metadata endpoints.

Long-Term Strategies:

• Regular Patching: Establish a regular patching and update schedule to ensure all software is up-to-date with the latest security patches.
• Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate potential vulnerabilities.
• Intrusion Detection: Implement intrusion detection systems (IDS) to monitor for suspicious activity and potential exploitation attempts.

5. Impact on European Cybersecurity Landscape

The discovery and exploitation of this vulnerability highlight the importance of securing open-source software and the need for robust vulnerability management practices. The European cybersecurity landscape must prioritize the following:

• Open-Source Security: Enhance the security of open-source projects through increased funding, community support, and regular security audits.
• Vulnerability Disclosure: Encourage responsible vulnerability disclosure and coordinated vulnerability management to ensure timely patching and mitigation.
• Regulatory Compliance: Ensure compliance with European cybersecurity regulations and standards to protect sensitive data and critical infrastructure.

6. Technical Details for Security Professionals

Vulnerability Details:

• CVE ID: CVE-2026-28680
• Affected Component: Manual asset import feature in Ghostfolio
• Exploitation Mechanism: The vulnerability allows an attacker to send crafted requests to the manual asset import endpoint, causing the server to perform unauthorized actions.

Mitigation Steps:

1. Upgrade to Version 2.245.0: Ensure all instances of Ghostfolio are upgraded to version 2.245.0 or later.
2. Implement Network Controls: Use firewalls and network segmentation to restrict access to sensitive internal services and cloud metadata endpoints.
3. Monitor for Suspicious Activity: Deploy intrusion detection systems and monitor logs for any suspicious activity that may indicate an SSRF attack.

References:

• GitHub Security Advisory
• Ghostfolio Release Notes

By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of SSRF attacks and protect their sensitive data and internal network services.