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: 2026-05-22
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 22 May 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Fri, 22 May 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Wordpress
Wordpress wordpress
Wpxpo
Wpxpo fastx
Vendors & Products Wordpress
Wordpress wordpress
Wpxpo
Wpxpo fastx

Fri, 22 May 2026 05:00:00 +0000

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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-05-22T12:21:18.173Z

Reserved: 2026-02-15T05:47:15.710Z

Link: CVE-2026-2518

cve-icon Vulnrichment

Updated: 2026-05-22T12:21:14.742Z

cve-icon NVD

Status : Deferred

Published: 2026-05-22T05:16:24.660

Modified: 2026-06-17T10:31:13.687

Link: CVE-2026-2518

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-22T12:37:56Z

Weaknesses