CVE-2025-30976 is a Server-Side Request Forgery (SSRF) vulnerability identified in the wpdive Nexa Blocks plugin, affecting versions up to and including 1.1.0. SSRF vulnerabilities occur when an attacker can manipulate a server to make HTTP requests to arbitrary domains or internal systems, potentially bypassing network access controls. In this case, the vulnerability allows an attacker with low privileges (PR:L) and no user interaction (UI:N) to induce the server hosting the Nexa Blocks plugin to send crafted requests to internal or external resources. The CVSS 3.1 base score is 4.9 (medium severity), reflecting that exploitation requires high attack complexity (AC:H) and low privileges but can impact confidentiality and integrity with no direct impact on availability. The vulnerability’s scope is changed (S:C), meaning exploitation can affect components beyond the vulnerable plugin itself. Although no known exploits are currently in the wild and no patches have been published yet, the SSRF flaw could be leveraged to access internal services, gather sensitive information, or perform further attacks such as port scanning or exploiting other internal vulnerabilities. Given the plugin’s integration in WordPress environments, this vulnerability could be a vector for lateral movement or data exfiltration if exploited by an attacker who has gained limited access to the system.

For European organizations, the impact of this SSRF vulnerability depends on the deployment of the wpdive Nexa Blocks plugin within their WordPress infrastructure. Organizations using this plugin could face risks of internal network reconnaissance, unauthorized access to internal APIs or services, and potential leakage of sensitive data. This is particularly critical for sectors with stringent data protection requirements such as finance, healthcare, and government institutions in Europe. Exploitation could lead to breaches of confidentiality and integrity, undermining compliance with GDPR and other regulatory frameworks. Additionally, SSRF can be a stepping stone for more advanced attacks, including privilege escalation or pivoting to other internal systems. The medium severity rating suggests moderate risk, but the changed scope indicates that the impact could extend beyond the plugin itself, affecting other components or services within the network. European organizations with complex internal networks or those exposing sensitive internal services to WordPress servers are at higher risk.

1. Immediate mitigation should include restricting outbound HTTP requests from the WordPress server hosting Nexa Blocks to only trusted destinations using firewall rules or network segmentation to limit SSRF exploitation potential. 2. Monitor and log outbound requests from the server to detect unusual or unauthorized access attempts. 3. Apply the principle of least privilege for the WordPress environment and the plugin, ensuring that the plugin runs with minimal permissions and cannot access sensitive internal resources. 4. Until an official patch is released, consider disabling or removing the Nexa Blocks plugin if it is not essential. 5. Conduct internal network scans to identify and secure any sensitive services that could be targeted via SSRF. 6. Implement Web Application Firewall (WAF) rules to detect and block suspicious SSRF payloads targeting the plugin. 7. Stay updated with vendor advisories and apply patches promptly once available. 8. Educate administrators about the risks of SSRF and the importance of network segmentation and access controls in WordPress hosting environments.