CVE-2026-2518
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk14th percentile - higher than 14% of all known CVEs
Summary
The FastX theme for WordPress up to version 1.0.2 lacks capability checks in the 'ultp_install_callback' and 'ultp_activate_callback' functions, allowing authenticated attackers with subscriber-level access to install and activate the PostX plugin.
Risk Assessment
Attackers can install and activate unauthorized plugins, potentially leading to site compromise.
Recommendation
Update the FastX theme to the latest patched version.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

