{"cve":"CVE-2026-18855","nvd":{"published":"2026-08-15T19:16:32.160","modified":"2026-08-20T12:48:10.287","status":"Deferred","description":"The Link Library plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the ll_delete_link_fields function in all versions up to, and including, 7.9.4 This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). Exploitation requires the administrator to have enabled the 'Delete local file on link deletion' plugin option (disabled by default) and to subsequently permanently delete the attacker-submitted link, which is a routine moderation action.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","score":9.1},"cwes":["CWE-22"],"references":["https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/link-library-admin.php#L7865","https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/link-library-admin.php#L7874","https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/link-library.php#L2288","https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/usersubmission.php#L476","https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/usersubmission.php#L52"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:10.689564601+00:00"},"epss":{"cve":"CVE-2026-18855","score":0.01352,"percentile":0.71555,"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."]}