CVE-2025-7640: Arbitrary File Access in hiWeb Export Posts

The primary impact of CVE-2025-7640 is the ability for an attacker to delete files on a WordPress server. This is achieved through a Cross-Site Request Forgery (CSRF) attack exploiting insufficient nonce validation in the tool-dashboard-history.php file. If an attacker can trick a site administrator into clicking a malicious link, they can initiate a forged request to delete files. The most critical scenario involves deleting the wp-config.php file, which contains sensitive database credentials and configuration settings. Deletion of this file would effectively grant the attacker complete control over the WordPress installation, enabling remote code execution and data exfiltration. The ease of exploitation, combined with the potential for complete system compromise, makes this a significant threat.

1. Reserved2025-07-14
2. Published2025-07-24
3. Modified2026-04-08
4. EPSS updated2026-03-23

The immediate mitigation for CVE-2025-7640 is to upgrade the hiWeb Export Posts plugin to a patched version as soon as it becomes available. Until a patch is released, consider disabling the plugin entirely to prevent exploitation. Implement strict CSRF protection measures on your WordPress site, including ensuring all forms and sensitive actions utilize strong, unpredictable nonces. Web Application Firewalls (WAFs) can be configured to detect and block malicious requests targeting the tool-dashboard-history.php file. Monitor WordPress logs for suspicious activity, particularly requests originating from unfamiliar IP addresses or user agents. Regularly back up your wp-config.php file to facilitate restoration in case of accidental or malicious deletion.