Attack Chain

1. Reconnaissance: An unauthenticated attacker identifies a WordPress site running a vulnerable version of the GoDAM plugin (1.12.2 or earlier).
2. Initial Access (File Upload): The attacker crafts a malicious HTTP POST request targeting the wp-admin/admin-ajax.php endpoint, which is commonly used by WordPress plugins to handle AJAX actions.
3. Action Invocation: The POST request includes an action parameter (e.g., action=gdam_save_video_file) specifically designed to invoke the vulnerable save_video_file() function within the GoDAM plugin.
4. Malicious Payload Delivery: The attacker includes a malicious file, such as a PHP web shell, within the multipart/form-data body of the request.
5. Bypass and File Placement: The save_video_file() function, due to its insufficient validation and direct file moving via $wp_filesystem->move() (bypassing wp_handle_upload()), saves the malicious file with its original executable extension (e.g., .php) to a web-accessible directory on the server.
6. Remote Code Execution: The attacker then sends a subsequent HTTP GET request directly to the URL of the uploaded web shell, executing arbitrary commands on the compromised WordPress server.
7. Impact: The successful execution of arbitrary commands grants the attacker full control over the WordPress instance and potentially the underlying server.

Impact

Successful exploitation of CVE-2026-14282 allows unauthenticated attackers to upload arbitrary files, including web shells, to a vulnerable WordPress site. This grants remote code execution capabilities, leading to full compromise of the affected website. Attackers can deface the site, inject malicious scripts, steal sensitive data from the database, disrupt website operations, or install backdoors for persistent access. The high CVSS score of 9.8 indicates critical impact and ease of exploitation, making this a severe threat to organizations utilizing the vulnerable plugin.

Recommendation

• Patch CVE-2026-14282 immediately by updating the GoDAM WordPress plugin to a version greater than 1.12.2.
• Deploy the Detects CVE-2026-14282 Exploitation - GoDAM Plugin Arbitrary File Upload Sigma rule to your SIEM to identify attempts to exploit this vulnerability.
• Enable comprehensive web server logging for HTTP POST requests, including cs-method, cs-uri-stem, cs-uri-query, and request_body if possible, to facilitate detection.
• Review WordPress server file system permissions to ensure web-accessible directories do not have write permissions for the web server user, if not strictly necessary.