High (8.8). EPSS 1.0% chance of exploitation in the next 30 days.
The Streamit theme for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'st_Authentication_Controller::edit_profile' function in all versions up to, and including, 4.0.1. This makes it possible for authenticated attackers, with subscriber-level and above permissions, to upload arbitrary files on the affected site's server which may make remote code execution possible.
Severity
CVSS 3.1
8.8 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)