CVE-2026-5957

The record

The EmailKit plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to and including 1.6.5. This is due to a flawed path traversal validation in the create_template() method of the CheckForm class, where realpath() is called on the allowed base directory (wp-content/uploads/emailkit/templates/) which may not exist, causing it to return false. In PHP 8.x, strpos($real_path, false) implicitly converts false to an empty string, and strpos() with an empty needle always returns 0, causing the check strpos(...) !== 0 to evaluate to false and bypassing the path validation entirely. This makes it possible for authenticated attackers, with Author-level access and above, to read arbitrary files from the server, including sensitive files such as wp-config.php, by supplying an absolute path to the emailkit-editor-template REST API parameter.

Affected packages

Related vulnerabilities

• CVE-2026-81163 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')… CWE-22
• CVE-2026-112049 Vita3K before build 4187 contains a path traversal (zip slip) vulnerability in… CWE-22
• CVE-2026-112005 WhoDB 0.104.0 before 0.135.0 contains a path traversal vulnerability that allows remote… CWE-22
• CVE-2026-61702 OpenPrinting CUPS is an open source printing system for Linux and other Unix-like… CWE-22
• CVE-2026-104871 The Angular SSR is a server-rise rendering tool for Angular applications. CWE-22
• CVE-2026-102991 Mako is a template library written in Python. CWE-22
• CVE-2026-101894 The decompress package for Node.js extracts archives. CWE-22
• CVE-2026-100689 GitPython before 3.1.62 does not validate the `path` field read from an untrusted… CWE-22