CVE-2026-110253: 
WordPress Analyse et atténuation des vulnérabilités

CVE-2026-110253 is a path traversal vulnerability in the Easy Drag & Drop Contact Form Builder for WordPress plugin (all versions up to 1.6.28) that allows unauthenticated attackers to delete arbitrary media files on the server. The flaw resides in the weforms_delete_entry_attachments function, which performs insufficient file path validation. Exploitation requires an administrator to permanently delete a form entry that has been poisoned by the attacker. The CVE is currently in Reserved status and is estimated to be HIGH severity (Feedly).

The root cause is improper limitation of a pathname to a restricted directory (CWE-22 / Path Traversal), mapped to CAPEC patterns including CAPEC-126 (Path Traversal), CAPEC-64 (Using Slashes and URL Encoding to Bypass Validation), and CAPEC-76 (Manipulating Web Input to File System Calls). The vulnerable function weforms_delete_entry_attachments does not adequately sanitize or restrict file paths supplied via form entry attachments, allowing an attacker to craft a malicious file path reference within a form submission. When an administrator permanently deletes the poisoned entry, the plugin processes the attacker-controlled path and deletes the targeted file outside the intended directory (Feedly).

Successful exploitation enables an unauthenticated attacker to delete arbitrary media files on the WordPress server, potentially destroying critical site assets, configuration files, or other media content. While the attacker cannot directly trigger the deletion — requiring an administrator action as a precondition — a determined attacker could submit multiple poisoned entries to maximize the chance of triggering file deletion. This could result in denial of service, defacement, or disruption of site functionality if critical files are removed (Feedly).

No public proof-of-concept exploit code, active in-the-wild exploitation, or threat actor attribution has been reported for CVE-2026-110253 at this time. The CVE status remains Reserved, and it has not been added to the CISA Known Exploited Vulnerabilities (KEV) catalog. Exploitation is partially constrained by the requirement for an administrator to permanently delete the attacker-poisoned form entry, reducing the likelihood of fully autonomous exploitation. No EPSS score is currently available given the Reserved status (Feedly).

1. Reconnaissance: Identify WordPress sites running the Easy Drag & Drop Contact Form Builder (weForms) plugin version 1.6.28 or earlier using tools like WPScan or Shodan.
2. Craft malicious form submission: Submit a contact form entry with an attachment field containing a path-traversal payload (e.g., ../../wp-content/uploads/important-file.jpg or similar) as the file path reference, targeting a specific file outside the uploads directory.
3. Wait for administrator action: The attacker monitors or repeatedly submits poisoned entries, waiting for a site administrator to review and permanently delete form entries (a routine administrative task).
4. Trigger arbitrary file deletion: When the administrator permanently deletes the poisoned entry, the weforms_delete_entry_attachments function processes the attacker-controlled path without adequate validation and deletes the targeted arbitrary file from the server (Feedly).

• Logs: WordPress access logs showing form submission requests (POST to weForms endpoints) with unusual or encoded file path strings containing ../ sequences or references to files outside the uploads directory.
• File System: Unexpected deletion of media files or other assets from the WordPress installation that do not correspond to legitimate user-uploaded content; missing files in wp-content/uploads/ or other directories.
• Application Logs: WordPress debug logs or server error logs referencing the weforms_delete_entry_attachments function with anomalous file paths at the time of entry deletion.

Site administrators should update the Easy Drag & Drop Contact Form Builder (weForms) plugin to a version beyond 1.6.28 once a patched release is made available by the vendor. As an interim workaround, administrators should exercise caution when permanently deleting form entries and consider temporarily disabling the plugin until a fix is confirmed. Restricting file system permissions on the WordPress server to limit the web server user's ability to delete files outside the uploads directory can reduce the impact of exploitation (Feedly).