CVE-2026-2518
FastX <= 1.0.2 - Missing Authorization to Authenticated (Subscriber+) Limited Plugin Installation and Activation
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-862 |
| Vendor | wpxpo |
| Product | fastx |
| Published | May 22, 2026 |
| Last Updated | May 22, 2026 |
Stay Ahead of the Next One
Get instant alerts for wpxpo fastx
Be the first to know when new medium vulnerabilities affecting wpxpo fastx are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
wpxpo / FastX
0 ≤ 1.0.2
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/6f5c4194-4f97-4f85-af90-e983ba9ce3a6?source=cve themes.trac.wordpress.org: https://themes.trac.wordpress.org/browser/fastx/1.0.2/classes/Initialization.php#L264 themes.trac.wordpress.org: https://themes.trac.wordpress.org/browser/fastx/1.0.2/classes/Initialization.php#L249
Credits
Itthidej Aramsri