CVE-2025-47484 in Display Remote Posts Block Plugin
Summary
by MITRE • 05/07/2025
Server-Side Request Forgery (SSRF) vulnerability in Oliver Campion Display Remote Posts Block allows Server Side Request Forgery. This issue affects Display Remote Posts Block: from n/a through 1.1.0.
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Analysis
by VulDB Data Team • 05/07/2025
The vulnerability identified as CVE-2025-47484 represents a critical Server-Side Request Forgery flaw within the Oliver Campion Display Remote Posts Block WordPress plugin. This security weakness enables malicious actors to manipulate the plugin's functionality to make unauthorized server-side requests to internal or external systems. The vulnerability specifically impacts versions of the Display Remote Posts Block plugin ranging from the initial release through version 1.1.0, indicating a broad affected scope that could potentially compromise numerous WordPress installations. The SSRF vulnerability arises from insufficient input validation and sanitization within the plugin's remote post fetching mechanism, allowing attackers to specify arbitrary URLs that the server will attempt to access on behalf of the vulnerable system.
The technical implementation of this vulnerability stems from the plugin's failure to properly validate user-supplied input when processing remote post requests. When users configure the plugin to fetch posts from external sources, the application does not adequately filter or sanitize the URLs provided in the configuration parameters. This lack of proper input validation creates an environment where an attacker can craft malicious requests that bypass normal network security controls and access internal resources that should remain isolated from external access. The vulnerability operates at the server-side processing level, meaning that the malicious request is executed with the privileges and network access rights of the web server itself, potentially exposing internal network services, databases, or other sensitive components that would normally be protected by firewalls or network segmentation.
The operational impact of this vulnerability extends beyond simple data exfiltration or service disruption, as it can enable attackers to perform reconnaissance activities against internal systems, access sensitive information, or even facilitate further exploitation within the compromised environment. Attackers could leverage this vulnerability to enumerate internal services, access internal APIs, or potentially exploit other vulnerabilities in systems that are not directly exposed to the internet. The risk is particularly elevated in environments where the web server has access to internal networks or where the plugin configuration allows for requests to be made to any URL without proper authorization checks. This type of vulnerability aligns with CWE-918, which specifically addresses Server-Side Request Forgery vulnerabilities, and represents a significant concern for organizations relying on WordPress plugins for content management and remote content integration.
Mitigation strategies for CVE-2025-47484 should prioritize immediate remediation through plugin updates to versions that address the SSRF vulnerability. Organizations must also implement network-level restrictions to prevent the web server from accessing internal resources, particularly by implementing proper firewall rules and network segmentation policies. Additionally, administrators should conduct thorough audits of plugin configurations to ensure that remote post fetching is restricted to known, trusted sources only, and that input validation mechanisms are properly enforced. The implementation of web application firewalls with SSRF protection capabilities can provide additional defense-in-depth measures, while regular security assessments of WordPress installations should include vulnerability scanning for similar issues. This vulnerability demonstrates the critical importance of validating all user inputs and implementing proper access controls, aligning with ATT&CK technique T1190 for Server-Side Request Forgery and highlighting the need for comprehensive security practices in web application development and deployment.