Platform
wordpress
Component
simple-file-list
Fixed in
6.1.15
CVE-2025-54021 describes an Arbitrary File Access vulnerability within the Simple File List WordPress plugin. This vulnerability allows attackers to potentially read sensitive files on the server due to improper input validation. Versions of Simple File List between 0.0.0 and 6.1.14 are affected. A fix is available in version 6.1.15.
The vulnerability stems from a lack of proper input sanitization, allowing attackers to manipulate file paths and access files outside the intended directory. An attacker could leverage this to read configuration files, database credentials, or other sensitive data stored on the server. Successful exploitation could lead to data breaches, compromise of the WordPress installation, and potentially even remote code execution if sensitive files contain executable code or credentials for other systems. The impact is amplified in shared hosting environments where multiple websites share the same server resources.
CVE-2025-54021 was published on 2025-08-20. There are currently no known public exploits or active campaigns targeting this vulnerability. It is not listed on the CISA KEV catalog at the time of writing. The vulnerability's simplicity suggests a moderate likelihood of exploitation if a suitable exploit is developed and disseminated.
Exploit Status
EPSS
0.08% (23% percentile)
CISA SSVC
CVSS Vector
The primary mitigation is to immediately upgrade Simple File List to version 6.1.15 or later. If upgrading is not immediately feasible, consider implementing a Web Application Firewall (WAF) rule to block requests containing path traversal sequences (e.g., ../). Additionally, restrict file permissions on sensitive files and directories to prevent unauthorized access. Regularly review WordPress plugin installations and remove any unused or outdated plugins to reduce the attack surface. After upgrading, confirm the vulnerability is resolved by attempting to access a file outside the intended directory via the plugin’s file listing functionality; access should be denied.
Update the Simple File List plugin to the latest available version to address the directory traversal vulnerability. Check for updates in the WordPress admin dashboard or through the WordPress plugin repository. Ensure you back up your website before updating any plugin.
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CVE-2025-54021 is a HIGH severity vulnerability in Simple File List allowing attackers to read arbitrary files on the server due to improper input validation. It affects versions 0.0.0–6.1.14.
You are affected if your WordPress site uses Simple File List version 0.0.0 through 6.1.14. Check your plugin versions and upgrade immediately if vulnerable.
Upgrade Simple File List to version 6.1.15 or later. As a temporary workaround, implement a WAF rule to block path traversal attempts.
As of 2025-08-20, there are no confirmed reports of active exploitation, but the vulnerability's simplicity makes it a potential target.
Refer to the Simple File List project's website or WordPress plugin repository for the official advisory and release notes.
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