CVE-2026-2518
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.
Published:May 22, 2026
Last Modified:May 22, 2026
EPS:May 22, 2026
EPSS Score:0.00008
CVSS Score:4.3
Affected Products
Vendor
Product
Action
Vendor
Wordpress
Product
Wordpress
Wordpress
Wordpress
Vendor
Wpxpo
Product
Fastx
Wpxpo
Fastx
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
