CVE-2026-2518

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

Published May 22, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Wordpress
Wordpress wordpress
Wpxpo
Wpxpo fastx
Vendors & Products Wordpress
Wordpress wordpress
Wpxpo
Wpxpo fastx
Type Values Removed Values Added
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.
Title FastX <= 1.0.2 - Missing Authorization to Authenticated (Subscriber+) Limited Plugin Installation and Activation
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
May 22, 2026, 12:21 PM
Reserved
Feb 15, 2026, 5:47 AM
Status
Deferred
Published
May 22, 2026, 5:16 AM
Modified
Jul 23, 2026, 4:10 PM