CVE-2026-19708 in File Manager Plugin
Summary
by MITRE • 09/26/2026
The File Manager WordPress plugin before 8.0.5 does not prevent unauthenticated users from downloading its database backup archives, and in some cases writes them under a fixed filename, allowing unauthenticated attackers to retrieve a full database dump including every user's email address and password hash on servers that do not apply the directory's .htaccess file.
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Analysis
by VulDB Data Team • 09/26/2026
The vulnerability identified in File Manager WordPress plugin versions prior to 8.0.5 represents a critical failure in access control mechanisms, specifically categorized under CWE-284 Improper Access Control. This flaw allows unauthenticated actors to bypass authentication requirements and directly interact with sensitive administrative functions within the application environment. The core technical issue stems from insufficient validation of user privileges when handling file operations related to database backups. Instead of restricting these actions to authenticated administrators with appropriate roles, the plugin exposes endpoints that permit any visitor to trigger backup generation or retrieval processes without verifying session tokens or permission levels.
A significant contributing factor to the severity of this vulnerability is the inconsistent application of server-level security configurations on target hosting environments. While many WordPress installations utilize .htaccess files to restrict direct access to sensitive directories, such as those containing database dumps, not all servers enforce these rules strictly due to misconfigurations or legacy hosting setups. When these protective measures are absent, the plugin's internal logic becomes the sole line of defense, which in this case is fundamentally broken. The vulnerability allows attackers to request backup files that contain comprehensive data exports from the WordPress database. These archives typically include user profiles, authentication keys, and most critically, password hashes stored using standard hashing algorithms like MD5 or bcrypt depending on the specific version and configuration.
The operational impact of this flaw extends beyond simple data exfiltration. By obtaining a full database dump, an attacker gains access to every registered user's email address alongside their corresponding password hash. This information facilitates highly effective offline brute-force attacks against the stored credentials. Given that many users reuse passwords across multiple platforms, compromising these hashes can lead to account takeovers not just within the WordPress site but potentially across other services where victims have employed similar authentication practices. Furthermore, access to administrative email addresses enables targeted phishing campaigns aimed at escalating privileges or spreading malware through trusted communication channels associated with the compromised website's domain reputation.
From a threat intelligence perspective, this vulnerability aligns closely with MITRE ATT&CK technique T1078 Valid Accounts and T1539 Steal Web Session Cookie if session data is also exposed in backups. The ability to download files without authentication falls under TA0006 Credential Access as it directly leads to the compromise of user credentials. Attackers can leverage these stolen hashes to perform credential stuffing attacks or attempt to reverse hash values using rainbow tables and modern GPU-accelerated cracking tools, thereby gaining persistent access to the underlying system if weak passwords are detected.
Mitigation strategies must address both the software defect and the environmental configuration gaps. The immediate remediation involves upgrading the File Manager plugin to version 8.0.5 or later where these access control checks have been implemented correctly. Administrators should also enforce strict .htaccess rules that deny direct web access to backup directories, ensuring that even if a vulnerability exists in future versions, the sensitive files remain inaccessible via HTTP requests. Additionally, implementing Web Application Firewall (WAF) rules can help detect and block anomalous download patterns associated with automated scraping of database dumps. Regular auditing of file permissions and reviewing server configuration logs for unauthorized access attempts are recommended practices to maintain robust security posture against such exploitation vectors.