CVE-2025-12348 identifies a missing authentication vulnerability (CWE-306) in the Icegram Express plugin for WordPress and WooCommerce, specifically in versions up to and including 5.9.10. The vulnerability exists in the run_action_scheduler_task function, which is responsible for executing scheduled actions such as sending emails, running maintenance tasks, or other privileged operations. Due to insufficient authorization checks, unauthenticated attackers can guess or enumerate action IDs and trigger these scheduled tasks prematurely or multiple times. This can cause unintended side effects including repeated email sends, manipulation of newsletter states, or excessive resource consumption on the server. The vulnerability is remotely exploitable over the network without any privileges or user interaction, with a CVSS 3.1 base score of 5.3 (medium severity). Although no public exploits have been reported, the flaw poses a risk to the integrity of marketing workflows and system stability. The plugin is widely used in WordPress environments for email marketing and newsletter management, making affected sites potential targets for abuse or denial-of-service conditions. No official patches have been linked yet, so mitigation relies on monitoring, restricting access, or disabling vulnerable functionality until updates are available.

For European organizations, this vulnerability can disrupt critical marketing and communication workflows by allowing attackers to prematurely or repeatedly trigger email campaigns or maintenance tasks. This can lead to reputational damage due to spam or unintended email sends, increased operational costs from resource exhaustion, and potential loss of control over automated marketing processes. Organizations relying heavily on WordPress and WooCommerce for customer engagement, especially in sectors like retail, media, and services, may experience degraded service availability or customer trust issues. Furthermore, repeated or manipulated scheduled tasks could interfere with data integrity related to subscriber management. Although the vulnerability does not directly expose sensitive data, the integrity impact and potential denial-of-service effects pose a significant operational risk. Given the widespread use of WordPress in Europe, the threat surface is considerable, particularly for SMEs and enterprises using this plugin for email marketing automation.

Immediate mitigation steps include restricting access to the run_action_scheduler_task endpoint by implementing web application firewall (WAF) rules that block unauthenticated requests targeting this function or guessing action IDs. Administrators should monitor logs for unusual or repeated calls to scheduled task endpoints and limit exposure by disabling or restricting the Icegram Express plugin if feasible. Employing rate limiting on relevant endpoints can reduce the risk of repeated exploitation. Until an official patch is released, organizations should consider isolating WordPress instances or using security plugins that enforce stricter authorization checks on plugin actions. Regular backups and monitoring of email campaign logs can help detect and respond to abuse. Finally, organizations should stay alert for vendor updates or patches and apply them promptly once available to fully remediate the vulnerability.