CVE-2025-47484 is a Server-Side Request Forgery (SSRF) vulnerability identified in the Oliver Campion Display Remote Posts Block plugin, affecting versions up to 1.1.0. SSRF vulnerabilities occur when an attacker can abuse a server's functionality to make HTTP requests to arbitrary domains or internal systems, potentially bypassing network access controls. In this case, the vulnerability allows an authenticated user (as indicated by the CVSS vector PR:L) to cause the server hosting the Display Remote Posts Block to send crafted requests to internal or external resources without user interaction. The vulnerability has a CVSS v3.1 base score of 6.4, categorized as medium severity. The vector string (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N) indicates that the attack can be performed remotely over the network with low attack complexity, requires privileges (authenticated user), no user interaction, and impacts confidentiality and integrity with a scope change, but does not affect availability. The scope change suggests that the vulnerability allows access to resources beyond the initially vulnerable component, potentially impacting other parts of the system or network. No known exploits are currently reported in the wild, and no patches or mitigation links are provided yet. The vulnerability is classified under CWE-918, which is a common weakness related to SSRF, often exploited to access internal services, metadata endpoints, or to perform port scanning and further internal reconnaissance. Given the nature of the plugin, which likely fetches and displays remote posts or content, the SSRF flaw could be exploited to access internal network resources or sensitive data, or to pivot attacks within the victim's infrastructure.

For European organizations using the Oliver Campion Display Remote Posts Block plugin, this SSRF vulnerability poses a significant risk to internal network security and data confidentiality. Attackers with authenticated access could exploit this flaw to access internal services that are otherwise inaccessible from the internet, such as internal APIs, databases, or cloud metadata services. This could lead to unauthorized data disclosure, information leakage, or further compromise of internal systems. The integrity impact means attackers might manipulate data or responses fetched via the vulnerable plugin, potentially injecting malicious content or misleading information into the application. Although availability is not directly impacted, the confidentiality and integrity risks could lead to reputational damage, regulatory non-compliance (e.g., GDPR violations), and financial losses. European organizations in sectors with high regulatory scrutiny or critical infrastructure may face increased risk due to the potential for lateral movement and data exfiltration. The requirement for authenticated access somewhat limits the attack surface but does not eliminate risk, especially in environments with many users or weak authentication controls.

1. Immediate mitigation should include restricting access to the Display Remote Posts Block plugin to trusted users only, minimizing the number of accounts with privileges to use the vulnerable functionality. 2. Network-level controls should be implemented to restrict outbound HTTP requests from the web server hosting the plugin, especially to internal IP ranges and sensitive endpoints such as cloud metadata services (e.g., 169.254.169.254). 3. Employ web application firewalls (WAFs) with rules to detect and block suspicious SSRF patterns or unusual outbound requests originating from the plugin. 4. Monitor logs for unusual outbound requests or access patterns related to the plugin to detect potential exploitation attempts. 5. Since no patch is currently available, consider disabling or removing the Display Remote Posts Block plugin if feasible until a secure version is released. 6. Enforce strong authentication and authorization controls to limit the number of users who can exploit this vulnerability. 7. Conduct internal network segmentation to limit the impact of SSRF attacks, ensuring that web servers cannot freely access sensitive internal resources. 8. Stay updated with vendor advisories for patches or official mitigations and apply them promptly once available.