CVE-2025-9554 is a vulnerability identified in the Drupal Owl Carousel 2 module, affecting all versions of this widely used Drupal plugin. Owl Carousel 2 is a JavaScript-based carousel/slider component integrated into Drupal websites to display images or content in a rotating fashion. The vulnerability is characterized by a CVSS 3.1 base score of 5.3, indicating a medium severity level. The CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) reveals that the attack can be performed remotely over the network without any authentication or user interaction, and it impacts confidentiality only, with no effect on integrity or availability. This suggests that an attacker can potentially access or extract sensitive data handled or exposed by the Owl Carousel 2 module, such as configuration details, image URLs, or other embedded content, without modifying or disrupting the service. The vulnerability was reserved in late August 2025 and published in October 2025, with no known exploits currently in the wild and no patches publicly available at the time of reporting. The lack of patches means organizations must rely on interim mitigations and monitoring. Given the module’s role in front-end content display, the exposure could lead to information disclosure that might aid further attacks or reconnaissance. The vulnerability’s ease of exploitation (no privileges or user interaction required) increases its risk profile, especially for public-facing Drupal sites using this module.

For European organizations, the primary impact of CVE-2025-9554 is the potential unauthorized disclosure of sensitive information related to website content or configuration managed via the Owl Carousel 2 module. This could include internal URLs, image metadata, or other data that may facilitate further targeted attacks such as phishing, social engineering, or reconnaissance for more severe exploits. While the vulnerability does not affect data integrity or service availability, the confidentiality breach can undermine trust, expose proprietary content, or reveal infrastructure details. Organizations operating public-facing Drupal websites with Owl Carousel 2 integrated are at risk, particularly those in sectors with high data sensitivity such as government, finance, healthcare, and critical infrastructure. The medium severity rating reflects a moderate risk that can escalate if combined with other vulnerabilities. The absence of known exploits reduces immediate threat but does not eliminate the risk of future weaponization. European entities must consider the regulatory implications of data exposure under GDPR, which mandates protection of personal and sensitive data, potentially leading to compliance issues and fines if exploited.

Given the current lack of official patches, European organizations should implement the following specific mitigations: 1) Conduct an immediate audit of Drupal installations to identify the presence and usage of Owl Carousel 2 modules. 2) Restrict public access to endpoints or resources related to Owl Carousel 2 where feasible, using web application firewalls (WAFs) or access control lists (ACLs) to limit exposure. 3) Monitor web server logs and network traffic for unusual or unauthorized access patterns targeting carousel-related URLs or resources. 4) Employ content security policies (CSP) and input validation to reduce the risk of data leakage through the carousel interface. 5) Engage with Drupal community channels and vendors to track the release of official patches or updates addressing CVE-2025-9554 and apply them promptly. 6) Consider temporary removal or disabling of the Owl Carousel 2 module if the risk outweighs its utility until a fix is available. 7) Educate web administrators and developers about the vulnerability to ensure awareness and rapid response. 8) Integrate this vulnerability into vulnerability management and incident response workflows to ensure continuous monitoring and mitigation.