CVE-2025-12376 is a Server-Side Request Forgery (SSRF) vulnerability identified in the WordPress plugin 'Icon List Block – Add Icon-Based Lists with Custom Styles' developed by bplugins. This vulnerability exists in all versions up to and including 1.2.1 and is exploitable via the plugin's fs_api_request function. SSRF vulnerabilities allow an attacker to abuse a vulnerable server to send crafted HTTP requests to arbitrary locations, often internal or protected network resources that are otherwise inaccessible externally. In this case, an attacker with at least Subscriber-level authentication privileges can trigger the vulnerability, which is significant because Subscriber is a low-privilege role in WordPress, often assigned to regular users or commenters. The attacker can make the server perform web requests to arbitrary URLs, potentially querying internal services or modifying information if those services accept such requests. The plugin only renders valid JSON objects in responses, which may limit some exploitation vectors but does not eliminate the risk. The CVSS 3.1 score of 6.4 indicates medium severity, with the vector string AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N meaning the attack is network-based, requires low privileges, no user interaction, and impacts confidentiality and integrity with a changed scope (likely meaning the attack affects resources beyond the vulnerable component). No patches or public exploits are currently available, but the vulnerability is published and should be addressed promptly. Given the widespread use of WordPress and the popularity of plugins for enhancing site functionality, this vulnerability poses a risk to many websites, especially those with multiple users and internal services accessible from the web server.

For European organizations, this vulnerability could lead to unauthorized internal network reconnaissance and potential data exposure or modification of internal services that are not directly accessible from the internet. Attackers exploiting this SSRF could pivot within the network, potentially accessing sensitive internal APIs, databases, or configuration endpoints. This could result in partial loss of confidentiality and integrity of data, especially if internal services lack strong authentication or authorization controls. Although availability is not directly impacted, the breach of internal systems could lead to further attacks or data leaks. Organizations relying on WordPress sites with this plugin, particularly those with multi-user environments or internal integrations, face increased risk. The medium severity score suggests the threat is significant but not critical, yet the low privilege requirement and network-based attack vector increase the likelihood of exploitation. The absence of known exploits in the wild currently provides a window for proactive mitigation. Failure to address this vulnerability could lead to targeted attacks against European enterprises, government portals, or e-commerce platforms using this plugin.

1. Immediately audit WordPress installations to identify the presence of the 'Icon List Block – Add Icon-Based Lists with Custom Styles' plugin and its version. 2. Restrict plugin usage to trusted administrators and remove or disable it if not essential. 3. Limit user roles and permissions to the minimum necessary, especially restricting Subscriber-level users from accessing vulnerable functionality if possible. 4. Monitor outgoing HTTP requests from web servers hosting the plugin to detect unusual or unauthorized internal network requests. 5. Implement network segmentation and firewall rules to restrict web server access to sensitive internal services, reducing the impact of SSRF exploitation. 6. Once a patch or update is released by the vendor, apply it promptly. 7. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious SSRF patterns targeting the fs_api_request function. 8. Conduct regular security assessments and penetration tests focusing on SSRF and internal service exposure. 9. Educate site administrators and developers about the risks of SSRF and the importance of validating and sanitizing all user inputs, even from authenticated users.