Is UX Flat safe to use?

Laskyr does not give safety verdicts. The latest version (5.4.0) has 1 known unpatched vulnerability. As of 2026-11-04, the sources we check list the newest release of UX Flat as affected and name no fixed version yet. Keep UX Flat on the latest version (5.4.0) and remove it if you do not use it.

Which versions of UX Flat are vulnerable?

Known issues on record (newest first): Stored cross-site scripting (XSS) (5.4.0 and older); Stored cross-site scripting (XSS) (4.4 and older, fixed in 4.6). The full list with sources is on this page.

What is the latest version of UX Flat?

5.4.0, according to wordpress.org (last updated 2025-06-29). It has 1,000+ active installs.

What should I do if my UX Flat is out of date?

Take a backup, then update it from Dashboard > Updates (or run wp plugin update ux-flat). If you cannot update right away, deactivate it until you can. If you think the site was already attacked, run a free scan at https://laskyr.com/scan.

Plugins · ux-flat · data as of 2026-11-04

Is UX Flat safe? Known vulnerabilities and latest version

Latest version: 5.4.0
Last updated: 2025-06-29
Active installs: 1,000+
Known issues on record: 2
Unpatched in latest: 1
Tested up to WP: 6.7.11 · PHP 7.4+

Enhance user experience with the sleek and modern design provided by the UX Flat plugin for WordPress websites. — by COP

What to do

There is no fixed version yet. If you can live without UX Flat for now, deactivate it and delete it until the developer ships a fix.
If you must keep it, limit who can log in (remove unused accounts, especially low-level ones) and put a web application firewall in front of the site.
Watch for an update: get an email when this page changes.
If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan, or have us clean it: Emergency Cleanup, $499.

With WP-CLI: wp plugin get ux-flat --field=version shows what you run; wp plugin update ux-flat updates it.

Check your version

Known vulnerabilities

2 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version.

medium 6.5 affects latest 5.4.0 CVE-2026-24576 · published 2026-01-23

Stored cross-site scripting (XSS) in UX Flat (5.4.0 and older)

Affected: 5.4.0 and older
Fixed in: no fix listed yet
Access needed (per CVSS): Needs a low-level account (e.g. subscriber); someone on the site has to click a link or open a page
Range from: CVE record (the advisory publisher) · score by Patchstack

Details from the advisory

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in COP UX Flat ux-flat allows Stored XSS.This issue affects UX Flat: from n/a through <= 5.4.0.

NVD CVE-2026-24576 Patchstack advisory

high 7.4 CVE-2024-2459 · published 2024-03-20

Stored cross-site scripting (XSS) in UX Flat (4.4 and older)

Affected: 4.4 and older
Fixed in: 4.6 *
Access needed (per CVSS): Needs a low-level account (e.g. subscriber)
Range from: CVE record (the advisory publisher) · score by Wordfence

Details from the advisory

The UX Flat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'button' shortcode in all versions up to, and including, 4.4 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

NVD CVE-2024-2459 Wordfence advisory Code change (fix)wordpress.org

Recent activity

2025-06-29 — latest release on wordpress.org (5.4.0).
2026-01-23 — Stored cross-site scripting (XSS) disclosed (CVE-2026-24576), no fix listed yet.
2024-03-20 — Stored cross-site scripting (XSS) disclosed (CVE-2024-2459), fixed in 4.6.

Free. We check the CVE feeds every day and email you only when a new issue for UX Flat (ux-flat) is published or a fix ships. Unsubscribe in one click.

Browse vulnerabilities

Types found in this plugin: Cross-site scripting (XSS) (2)

Where this data comes from

Version, last update, installs: wordpress.org/plugins/ux-flat (Plugins API), fetched 2026-11-04.
Vulnerabilities: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
Each record links to its CVE page and to the original advisory (Wordfence, Patchstack or WPScan) where there is one. We only list a CVE here when its references or its advisory name this exact plugin, so a few real issues may be missing; none should be about a different plugin. Spot an error? Email Daniel.

Badge for your site or docs (states facts with a date, not a verdict):

<a href="https://laskyr.com/plugins/ux-flat"><img src="https://laskyr.com/plugins/ux-flat/badge.svg" alt="UX Flat vulnerability status"></a>

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