CVE-2025-3431 Overview
CVE-2025-3431 is an arbitrary file read vulnerability in the ZoomSounds - WordPress Wave Audio Player with Playlist plugin. The flaw affects all versions up to and including 6.91 and is exposed through the dzsap_download action. Unauthenticated attackers can read the contents of arbitrary files on the underlying server, including configuration files and credentials. The issue is classified under CWE-73: External Control of File Name or Path.
Critical Impact
Remote, unauthenticated attackers can exfiltrate sensitive server files such as wp-config.php, exposing database credentials and authentication secrets.
Affected Products
- ZoomSounds - WordPress Wave Audio Player with Playlist plugin, all versions up to and including 6.91
- Vendor: DigitalZoomStudio
- Deployment scope: WordPress sites running the commercial Codecanyon plugin
Discovery Timeline
- 2025-04-08 - CVE-2025-3431 published to NVD
- 2025-06-04 - Last updated in NVD database
Technical Details for CVE-2025-3431
Vulnerability Analysis
The ZoomSounds plugin exposes a dzsap_download action that handles file download requests. The handler accepts a user-supplied file path parameter without enforcing authentication or validating that the path resolves inside an allowed directory. An attacker can supply a relative or absolute path and the server returns the file contents in the HTTP response.
Because the action is reachable by unauthenticated visitors, exploitation requires only network access to the WordPress site. The vulnerability impacts confidentiality but does not modify data or disrupt service availability. Successful exploitation commonly yields the wp-config.php file, which contains database credentials, secret keys, and authentication salts.
Root Cause
The root cause is improper neutralization of file path input passed to the dzsap_download action. The plugin trusts external input to construct file system paths, matching the [CWE-73] pattern of external control of file name or path. There is no authentication gate, no capability check, and no allowlist of permitted directories or file extensions.
Attack Vector
An attacker issues an unauthenticated HTTP request to the WordPress AJAX endpoint invoking the dzsap_download action with a crafted file path parameter. Path traversal sequences or absolute paths point the handler at sensitive files outside the plugin's intended scope. The server reads the target file and returns its contents in the response body. See the Wordfence Vulnerability Analysis for additional technical context.
No verified public proof-of-concept code is referenced in the advisory data, so exploitation details are described in prose rather than reproduced here.
Detection Methods for CVE-2025-3431
Indicators of Compromise
- HTTP requests to admin-ajax.php or plugin endpoints containing the parameter action=dzsap_download from unauthenticated sessions
- Request parameters containing path traversal sequences such as ../, encoded variants like %2e%2e%2f, or absolute paths referencing wp-config.php, /etc/passwd, or .env
- Outbound responses from the WordPress host with file content sizes inconsistent with audio media downloads
- Repeated dzsap_download requests from a single source IP enumerating different file paths
Detection Strategies
- Inspect web server access logs for dzsap_download action invocations and correlate with file path parameters that reference non-audio assets
- Deploy WAF or reverse-proxy rules that block requests to the dzsap_download action containing traversal patterns or sensitive filenames
- Alert on responses returning PHP source content or files with .php, .env, or .ini extensions from the audio plugin endpoint
Monitoring Recommendations
- Continuously monitor WordPress plugin inventories for ZoomSounds versions at or below 6.91
- Track 200-status responses to the dzsap_download action and baseline expected request volumes
- Forward web access logs to a centralized analytics platform and alert on anomalous file read patterns originating from public IP ranges
How to Mitigate CVE-2025-3431
Immediate Actions Required
- Identify every WordPress instance running the ZoomSounds plugin and confirm the installed version
- Update the plugin to the vendor-released fixed version distributed through Codecanyon
- Rotate WordPress secret keys, database credentials, and any API tokens stored in wp-config.php if exposure is suspected
- Review web server logs for prior exploitation attempts referencing the dzsap_download action
Patch Information
The vendor distributes ZoomSounds through Codecanyon. Site administrators should obtain the latest plugin release that addresses CVE-2025-3431 from the official Codecanyon listing. Apply the update across all WordPress instances and verify the plugin version after upgrade. Additional context is available in the Wordfence advisory.
Workarounds
- Deactivate and remove the ZoomSounds plugin until a patched version is installed
- Block requests containing action=dzsap_download at the WAF or reverse proxy if the plugin cannot be removed immediately
- Restrict file system permissions so the WordPress process cannot read sensitive files outside the web root
- Move secrets out of wp-config.php into environment variables or a secrets manager where supported
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
