CVE-2025-55007 is a Server-Side Request Forgery (SSRF) vulnerability identified in KnowageLabs' Knowage-Server, an open source analytics and business intelligence platform. This vulnerability affects versions prior to 8.1.37. SSRF vulnerabilities allow attackers to abuse a server's functionality to send HTTP requests to arbitrary hosts or paths, potentially including internal network resources that are otherwise inaccessible externally. In this case, the attacker can cause the Knowage-Server to send requests to arbitrary destinations; however, the vulnerability does not allow the attacker to read the response content from these requests, which limits the direct data exfiltration capabilities. Despite this limitation, the SSRF can be leveraged to perform internal network reconnaissance, such as scanning internal IP ranges or services that are not exposed externally. This can provide attackers with valuable information about the internal network topology and potentially identify other vulnerable services for further exploitation. The vulnerability requires some level of privileges (PR:L) and user interaction (UI:R), meaning an attacker must have limited privileges and trick a user into performing an action to exploit it. The CVSS v3.1 base score is 3.5, categorized as low severity, reflecting the limited impact and exploitation complexity. The issue was publicly disclosed on September 1, 2025, and patched in version 8.1.37 of Knowage-Server. No known exploits are currently reported in the wild. The vulnerability is classified under CWE-918 (Server-Side Request Forgery).

For European organizations using Knowage-Server versions prior to 8.1.37, this SSRF vulnerability poses a moderate security risk primarily related to internal network reconnaissance. Attackers exploiting this flaw could map internal services and infrastructure, potentially identifying further vulnerabilities or misconfigurations within the internal network. While direct data theft or service disruption is unlikely due to the inability to read response data and the low severity rating, the reconnaissance capability can be a stepping stone for more sophisticated attacks. Organizations in sectors with sensitive internal networks, such as finance, healthcare, and government, could face increased risk if attackers leverage this vulnerability to gain insights into their internal environment. Additionally, the requirement for limited privileges and user interaction means insider threats or social engineering attacks could facilitate exploitation. The vulnerability does not directly compromise confidentiality, integrity, or availability but can indirectly weaken the security posture by exposing internal network details.

1. Immediate upgrade to Knowage-Server version 8.1.37 or later, where the SSRF vulnerability is patched, is the most effective mitigation. 2. Implement strict input validation and sanitization on any user-controllable parameters that trigger server-side requests to prevent injection of arbitrary URLs or hosts. 3. Employ network segmentation and firewall rules to restrict the Knowage-Server's outbound HTTP requests only to trusted and necessary internal and external endpoints, minimizing the attack surface. 4. Monitor and log outbound requests from the Knowage-Server to detect unusual or unauthorized internal network scanning activities. 5. Apply the principle of least privilege to user accounts, limiting the ability of users to trigger SSRF-related functionality unless necessary. 6. Conduct regular security awareness training to reduce the risk of social engineering attacks that could facilitate exploitation requiring user interaction. 7. Use Web Application Firewalls (WAFs) with SSRF detection capabilities to block suspicious request patterns targeting the vulnerable endpoints. 8. Perform internal network vulnerability assessments to identify and remediate other weaknesses that could be exploited following reconnaissance.