CVE-2026-2518

Description

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 Reserved 2026-02-15 | Published 2026-05-22 | Updated 2026-05-22 | Assigner Wordfence

Problem types

CWE-862 Missing Authorization

Product status

Timeline

Credits

Itthidej Aramsri finder

References

www.wordfence.com/...-4f97-4f85-af90-e983ba9ce3a6?source=cve

themes.trac.wordpress.org/....0.2/classes/Initialization.php

themes.trac.wordpress.org/....0.2/classes/Initialization.php

cve.org (CVE-2026-2518)

nvd.nist.gov (CVE-2026-2518)

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