CVE-2025-49300 identifies a vulnerability in the Traveler Option Tree plugin developed by shinetheme, affecting versions up to and including 2.8. The issue is characterized as an 'Insertion of Sensitive Information Into Sent Data' vulnerability, which means that sensitive information embedded within the plugin's data structures can be unintentionally included in data sent externally, such as in HTTP requests or responses. This exposure could allow attackers to retrieve embedded sensitive data that should otherwise remain confidential. The vulnerability does not require authentication or user interaction, increasing the risk of exploitation. Although no known exploits are currently reported in the wild, the lack of a patch at the time of publication suggests that the vulnerability remains unmitigated. The plugin is commonly used in WordPress environments, particularly for travel-related websites that utilize custom option trees for configuration or user input. The vulnerability likely arises from improper sanitization or filtering of sensitive data before transmission, leading to leakage. Since the CVSS score is not provided, the severity assessment must consider the potential impact on confidentiality, ease of exploitation, and scope of affected systems. Given that sensitive data can be retrieved without authentication, the risk is significant. The vulnerability could lead to data breaches, loss of customer trust, and regulatory compliance issues, especially under GDPR in Europe.

For European organizations, the primary impact of CVE-2025-49300 is the potential unauthorized disclosure of sensitive information handled by the Traveler Option Tree plugin. This could include personal data of customers or internal configuration details, leading to privacy violations and regulatory non-compliance under GDPR. The exposure of sensitive data can result in reputational damage, financial penalties, and operational disruptions. Organizations in the travel, hospitality, and tourism sectors that rely on WordPress sites with this plugin are particularly at risk. The vulnerability's ease of exploitation without authentication increases the attack surface, making automated or remote attacks feasible. Additionally, data leakage could facilitate further attacks such as phishing or credential theft. The lack of a patch at the time of disclosure means organizations must implement interim controls to reduce risk. Overall, the impact is high for entities processing sensitive customer data or proprietary business information via affected systems.

1. Monitor shinetheme and official plugin repositories for security patches addressing CVE-2025-49300 and apply updates promptly once available. 2. In the interim, restrict access to the Traveler Option Tree plugin’s administrative and configuration interfaces to trusted personnel only, using role-based access controls and IP whitelisting where possible. 3. Conduct a thorough audit of data flows involving the plugin to identify where sensitive information might be embedded and transmitted. 4. Implement web application firewalls (WAFs) with custom rules to detect and block suspicious requests or data exfiltration attempts related to the plugin. 5. Review and sanitize all data inputs and outputs associated with the plugin to ensure sensitive data is not inadvertently included in sent data. 6. Educate development and security teams about the vulnerability to increase vigilance for related suspicious activity. 7. Consider temporary disabling or replacing the plugin if the risk is deemed unacceptable and no patch is available. 8. Maintain comprehensive logging and monitoring to detect potential exploitation attempts early.