CVE-2026-2518CWE-862

FastX <= 1.0.2 - Missing Authorization to Authenticated (Subscriber+) Limited Plugin Installation and Activation

Medium · published May 22, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
13.1
In the wild
Unconfirmed
What it is

The FastX theme for WordPress is vulnerable to unauthorized limited plugin installation and activation due to missing capability checks on the 'ultp_install_callback' and 'ultp_activate_callback' functions in all versions up to, and including, 1.0.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install and activate the PostX plugin.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00230 · 13.1th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-05-22T04:29Z
EPSS history
Timeline
  • 22 MAY 04:29Z
    FastX <= 1.0.2 - Missing Authorization to Authenticated (Subscriber+) Limited Plugin Installation and Activation
    cvelistv5