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CVE-2026-5957 Detail

Description

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://plugins.trac.wordpress.org/browser/emailkit/tags/1.6.5/includes/Admin/Api/CheckForm.php#L163 Wordfence
https://plugins.trac.wordpress.org/browser/emailkit/tags/1.6.5/includes/Admin/Api/CheckForm.php#L166 Wordfence
https://plugins.trac.wordpress.org/browser/emailkit/tags/1.6.5/includes/Admin/Api/CheckForm.php#L170 Wordfence
https://plugins.trac.wordpress.org/browser/emailkit/tags/1.6.5/includes/Admin/EmailSettings/MetformEmailSettings.php#L252 Wordfence
https://plugins.trac.wordpress.org/browser/emailkit/trunk/includes/Admin/Api/CheckForm.php#L163 Wordfence
https://plugins.trac.wordpress.org/browser/emailkit/trunk/includes/Admin/Api/CheckForm.php#L166 Wordfence
https://plugins.trac.wordpress.org/browser/emailkit/trunk/includes/Admin/Api/CheckForm.php#L170 Wordfence
https://plugins.trac.wordpress.org/browser/emailkit/trunk/includes/Admin/EmailSettings/MetformEmailSettings.php#L252 Wordfence
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3511701%40emailkit%2Ftrunk&old=3496714%40emailkit%2Ftrunk&sfp_email=&sfph_mail= Wordfence
https://www.wordfence.com/threat-intel/vulnerabilities/id/ae58e5b0-b587-4503-8519-c5a50245891a?source=cve Wordfence

Weakness Enumeration

CWE-ID CWE Name Source
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') Wordfence  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-5957
NVD Published Date:
05/05/2026
NVD Last Modified:
05/05/2026
Source:
Wordfence