{"cve":"CVE-2026-5478","nvd":{"published":"2026-04-20T20:16:48.800","modified":"2026-06-17T10:59:06.260","status":"Deferred","description":"The Everest Forms plugin for WordPress is vulnerable to Arbitrary File Read and Deletion in all versions up to, and including, 3.4.4. This is due to the plugin trusting attacker-controlled old_files data from public form submissions as legitimate server-side upload state, and converting attacker-supplied URLs into local filesystem paths using regex-based string replacement without canonicalization or directory boundary enforcement. This makes it possible for unauthenticated attackers to read arbitrary local files (e.g., wp-config.php) by injecting path-traversal payloads into the old_files upload field parameter, which are then attached to notification emails. The same path resolution is also used in the post-email cleanup routine, which calls unlink() on the resolved path, resulting in the targeted file being deleted after being attached. This can lead to full site compromise through disclosure of database credentials and authentication salts from wp-config.php, and denial of service through deletion of critical files. Prerequisite: The form must contain a file-upload or image-upload field, and disable storing entry information.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":["CWE-22"],"references":["https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.4/includes/abstracts/class-evf-form-fields-upload.php#L1306","https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.4/includes/abstracts/class-evf-form-fields-upload.php#L1581","https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.4/includes/abstracts/class-evf-form-fields-upload.php#L1665","https://plugins.trac.wordpress.org/changeset/3507814/everest-forms","https://www.wordfence.com/threat-intel/vulnerabilities/id/8641eb53-6a9a-4549-b8ef-e37acbcc7f03?source=cve"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:30:49.762551342+00:00"},"epss":{"cve":"CVE-2026-5478","score":0.01022,"percentile":0.63494,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}