CVE-2024-48907 is a Server-Side Request Forgery (SSRF) vulnerability identified in Sematell ReplyOne version 7.4.3.0. SSRF vulnerabilities occur when an attacker can abuse a server-side application to send crafted requests to unintended locations, potentially accessing internal systems or sensitive data. In this case, the vulnerability exists in the application server API of ReplyOne, allowing unauthenticated remote attackers to induce the server to make arbitrary HTTP requests. The CVSS 3.1 base score is 7.5 (high severity), with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), high confidentiality impact (C:H), no integrity impact (I:N), and no availability impact (A:N). This means an attacker can remotely exploit this vulnerability without authentication or user interaction, potentially accessing sensitive internal resources or data that the server can reach, leading to confidentiality breaches. The vulnerability is classified under CWE-918 (Server-Side Request Forgery). No known exploits in the wild have been reported yet, and no patches or vendor advisories are currently available. The lack of vendor and product information limits detailed attribution, but the affected version is specified as 7.4.3.0 of Sematell ReplyOne. The vulnerability was reserved in October 2024 and published in May 2025.

For European organizations using Sematell ReplyOne 7.4.3.0, this SSRF vulnerability poses a significant risk to confidentiality. Attackers could leverage this flaw to access internal services, metadata endpoints, or other sensitive infrastructure components that are not directly exposed to the internet but accessible from the vulnerable server. This could lead to unauthorized data disclosure, reconnaissance for further attacks, or pivoting inside the network. Given the high confidentiality impact and ease of exploitation without authentication, organizations handling sensitive personal data, intellectual property, or critical business information could face data breaches, regulatory penalties under GDPR, and reputational damage. The absence of integrity and availability impacts reduces the risk of direct data manipulation or service disruption, but the confidentiality breach alone is critical. Additionally, the lack of patches increases exposure time, emphasizing the need for immediate mitigations. The threat is particularly relevant for sectors with high data sensitivity such as finance, healthcare, government, and critical infrastructure within Europe.

1. Network Segmentation: Restrict the vulnerable server's ability to make outbound HTTP requests to only trusted and necessary endpoints using firewall rules or network ACLs. 2. Web Application Firewall (WAF): Deploy and configure a WAF with rules to detect and block SSRF attack patterns targeting the application server API. 3. Input Validation and Filtering: If possible, implement strict validation and sanitization of all inputs that influence server-side requests to prevent malicious URL injection. 4. Monitor and Log: Enable detailed logging of outbound requests from the application server and monitor for unusual or unexpected destinations. 5. Temporary Workarounds: If patching is not immediately available, consider disabling or restricting the vulnerable API endpoints or features until a fix is released. 6. Vendor Engagement: Engage with Sematell or relevant vendors to obtain patches or security advisories and apply updates promptly once available. 7. Internal Asset Discovery: Identify and inventory all instances of Sematell ReplyOne 7.4.3.0 within the organization to prioritize remediation efforts. 8. Incident Response Preparedness: Prepare to detect and respond to potential exploitation attempts, including threat hunting for SSRF indicators.