CVE-2026-13492: Path Traversal (CVSS 8.8)

Description

The UsersWP plugin for WordPress is vulnerable to Arbitrary File Deletion in versions up to, and including, 1.2.65. This is due to insufficient validation of file-field values in the UsersWP_Validation::validate_fields() function (which falls through to sanitize_text_field() for fields of type 'file', leaving directory-traversal sequences intact) combined with the UsersWP_Forms::upload_file_remove() AJAX handler building the deletion target from the uploads basedir concatenated with the attacker-controlled metadata value without any realpath canonicalization or uploads-directory boundary check before calling unlink(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary files on the affected site's server, including wp-config.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0053

Probability of exploitation

0.41%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-22 Path Traversal

References

Other References

https://github.com/AyeCode/userswp/commit/ddb17ad30ff3384cda85c5f372db30b03bd45ac8 https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.65/includes/class-forms.php#L1059 https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.65/includes/class-forms.php#L1973 https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.65/includes/class-forms.php#L2320 https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.65/includes/class-forms.php#L2323 https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.65/includes/class-validation.php#L190 https://plugins.trac.wordpress.org/changeset/3590340/userswp https://www.wordfence.com/threat-intel/vulnerabilities/id/b6cf6390-480f-44e2-ae36-67e3398add33?source=cve

Frequently Asked Questions

What is CVE-2026-13492? +

The UsersWP plugin for WordPress is vulnerable to Arbitrary File Deletion in versions up to, and including, 1.2.65. This is due to insufficient validation of file-field values in the UsersWP_Validation::validate_fields() function (which falls through to sanitize_text_field() for fields of type 'file', leaving directory-traversal sequences intact) combined with the UsersWP_Forms::upload_file_remove() AJAX handler building the deletion target from the uploads basedir concatenated with the attacker-controlled metadata value without any realpath canonicalization or uploads-directory boundary check before calling unlink(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary files on the affected site's server, including wp-config. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-13492? +

CVE-2026-13492 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0053, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-13492? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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