On October 6, 2025, Oracle disclosed a security bulletin revealing an actively exploited vulnerability in Oracle E-Business Suite (CVE-2025-61882). The vulnerability resides in the OA_HTML components, specifically involving the handling of HTTP requests to endpoints such as /OA_HTML/runforms.jsp, /OA_HTML/JavaScriptServlet, and /OA_HTML/configurator/UiServlet. The exploit script, named "exp.py," initiates by sending a GET request to identify the target host and follows up with a POST request to retrieve a CSRF token. The final exploit request is a POST to the UiServlet endpoint containing a crafted XML payload embedded within URL-encoded form data. This payload includes parameters that manipulate the application server to perform server-side request forgery (SSRF), allowing it to connect to attacker-controlled hosts (referred to as "evilhost") and potentially retrieve malicious instructions or exfiltrate data. The exploit also leverages an invalid HTTP version (1.2) and path traversal techniques to bypass security filters and access restricted resources. The vulnerability enables attackers to abuse the application server's trust and network access, potentially compromising confidentiality and integrity of internal systems. Oracle has issued a patch and published indicators of compromise (IoCs) as part of their incident response. No confirmed widespread exploitation is reported, but the availability of a public exploit script increases the risk of attacks. The vulnerability does not require authentication, making it easier for remote attackers to exploit. Detection can focus on anomalous HTTP version usage and unusual POST requests to the UiServlet endpoint. The vulnerability is best classified as an SSRF flaw with path traversal components, affecting the Oracle E-Business Suite application server's internal request handling.

For European organizations, the impact of this vulnerability can be significant, especially for enterprises relying heavily on Oracle E-Business Suite for critical business processes such as finance, supply chain, and human resources. Successful exploitation could allow attackers to perform SSRF attacks that bypass perimeter defenses, access internal services, and potentially pivot within the network. This could lead to unauthorized data access, leakage of sensitive corporate information, disruption of business operations, and compromise of internal infrastructure. Given the integration of Oracle EBS with other enterprise systems, attackers might leverage this vulnerability to escalate privileges or deploy further malware. The use of SSRF can also facilitate reconnaissance of internal network topology and services, increasing the risk of subsequent targeted attacks. The medium severity rating by Oracle may underestimate the broader impact in complex enterprise environments. European organizations with less mature network segmentation or monitoring capabilities are particularly vulnerable. Additionally, regulatory implications under GDPR could arise if personal or sensitive data is exposed due to exploitation. The timing of the disclosure and patch availability necessitates rapid response to prevent exploitation attempts, especially in sectors like finance, manufacturing, and government where Oracle EBS is prevalent.

European organizations should immediately prioritize the application of Oracle's official patch for CVE-2025-61882 to eliminate the vulnerability. Beyond patching, organizations should implement strict network segmentation to limit Oracle EBS server access to only necessary internal resources and restrict outbound connections from the application server to untrusted hosts. Deploy advanced web application firewalls (WAFs) configured to detect and block anomalous HTTP versions (such as 1.2) and unusual POST requests targeting OA_HTML endpoints. Monitor network traffic for signs of SSRF activity, including unexpected requests to internal or external IPs originating from Oracle EBS servers. Conduct thorough log analysis focusing on CSRF token requests and UiServlet POST requests with large payloads or XML content. Employ intrusion detection systems (IDS) with updated signatures for this vulnerability and IoCs published by Oracle. Review and tighten CSRF protections and validate input handling within Oracle EBS customizations. Educate security teams about this specific exploit pattern to enhance detection and incident response readiness. Finally, consider implementing outbound proxy controls and egress filtering to prevent unauthorized external connections initiated by compromised application servers.