CVE-2025-49419 is a medium severity vulnerability classified under CWE-497, which pertains to the exposure of sensitive system information to an unauthorized control sphere. This vulnerability affects the Foxit eSign for WordPress plugin, specifically versions up to 2.0.3. The issue allows an attacker with high privileges (PR:H) but no user interaction (UI:N) to remotely retrieve embedded sensitive data from the system over the network (AV:N). The vulnerability does not allow modification or destruction of data (integrity impact is low, availability impact is none), but it results in a high confidentiality impact due to unauthorized disclosure of sensitive information. The vulnerability is exploitable remotely without user interaction, but requires the attacker to have some level of privileges on the WordPress site, which limits the attack surface to users who already have elevated access. The lack of available patches at the time of publication indicates that organizations using affected versions remain vulnerable. The plugin is used to facilitate electronic signatures within WordPress environments, meaning that sensitive documents or authentication tokens embedded within the plugin could be exposed. This exposure could lead to further attacks such as credential theft, unauthorized document access, or escalation of privileges within the affected environment.

For European organizations, the exposure of sensitive system information through this vulnerability could lead to significant confidentiality breaches, especially in sectors relying on electronic signatures for legal, financial, or healthcare documentation. The unauthorized disclosure of embedded sensitive data could compromise client information, contract details, or internal authentication mechanisms, potentially violating GDPR requirements for data protection and privacy. This could result in regulatory fines, reputational damage, and loss of customer trust. Additionally, if attackers leverage the exposed information to escalate privileges or move laterally within the network, it could lead to broader security incidents. Organizations using WordPress with the Foxit eSign plugin in industries such as legal services, finance, and government are particularly at risk due to the sensitive nature of the data handled.

Organizations should immediately assess their use of the Foxit eSign for WordPress plugin and identify if versions up to 2.0.3 are in use. Until a patch is released, it is advisable to restrict access to the WordPress admin interface and the plugin’s functionalities to trusted users only, implementing strict role-based access controls to limit high privilege accounts. Monitoring and logging access to the plugin’s features should be enhanced to detect any unauthorized attempts to retrieve sensitive data. Network-level protections such as web application firewalls (WAFs) can be configured to detect and block suspicious requests targeting the plugin. Additionally, organizations should consider isolating the WordPress environment or running it with minimal privileges to reduce the impact of potential exploitation. Once a patch becomes available, prompt application of updates is critical. Finally, reviewing and auditing the sensitive data embedded within the plugin to minimize exposure is recommended.