A critical information exposure vulnerability in the E-Invoice App Malaysia plugin allows unauthenticated attackers to exfiltrate sensitive system data.

This vulnerability is categorized as an exposure of sensitive system information (CWE-497). It allows an unauthenticated attacker to access embedded data from the application, potentially leading to the disclosure of configuration details or other sensitive environment variables.

The exposure of sensitive system information can provide attackers with the reconnaissance data necessary to craft more sophisticated, targeted attacks against the hosting infrastructure. With a CVSS score of 7.5, this high-severity vulnerability poses a significant risk to data confidentiality, potentially leading to unauthorized access to internal system configurations or credentials.

Immediate Action: Since a specific patch version is not currently identified, users should immediately deactivate and remove the E-Invoice App Malaysia plugin until an official security update is released by the vendor.

Proactive Monitoring: Review web server and application access logs for unusual requests directed at the plugin directory or associated endpoints that may indicate automated scanning or data exfiltration attempts.

Compensating Controls: Deploy a Web Application Firewall (WAF) with rules configured to block suspicious requests targeting known plugin paths or patterns associated with information disclosure vulnerabilities.

Public Exploit Available: No confirmed public exploit (weaponized or otherwise) is available in the provided data.

Given the high severity of this vulnerability and the potential for unauthorized data access, organizations should prioritize the removal of the vulnerable plugin from their WordPress environments. Monitor the vendor advisory page for updates and do not re-enable the plugin until a verified fix has been applied to the production environment.