CVE-2026-13492

HIGH

UsersWP <= 1.2.65 - Authenticated (Subscriber+) Arbitrary File Deletion via File Upload Field

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-13492. PoCs published by incogbyte.

AI-analyzed exploit summary Authenticated (Subscriber+) arbitrary file deletion exploit for UsersWP <= 1.2.65 via path traversal in the `uwp_upload_file_remove` AJAX action. The exploit poisons a custom file field value with path traversal sequences to delete files outside the intended uploads directory.

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.

Exploits (1)

github WORKING POC
by incogbyte · pythonpoc
https://github.com/incogbyte/wp-cve-exploits/tree/main/CVE-2026-13492

Authenticated (Subscriber+) arbitrary file deletion exploit for UsersWP <= 1.2.65 via path traversal in the `uwp_upload_file_remove` AJAX action. The exploit poisons a custom file field value with path traversal sequences to delete files outside the intended uploads directory.

Classification
Working Poc 98%
Attack Type
Other
Complexity
Moderate
Reliability
Reliable
Target: UsersWP plugin <= 1.2.65 (WordPress)
Auth required
Prerequisites: Valid WordPress subscriber+ credentials · Numeric user ID of the account · Existence of a custom 'file' or 'image' field in the UsersWP Account form · Target file must be reachable via path traversal from wp-content/uploads
mistral-large-3 · analyzed Jul 10, 2026 Full analysis →

Scores

CVSS v3 8.8
EPSS 0.0051
EPSS Percentile 40.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-22
Status published
Products (1)
stiofansisland/UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WP < 1.2.65
Published Jul 09, 2026
Tracked Since Jul 10, 2026