CVE-2026-18317

Medium

Description

The Foxtool All-in-One: Contact chat button, Custom login, Media optimize images plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.5.3. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify arbitrary subkeys of the foxtool_settings option, including enabling site-wide SVG uploads by toggling the media-up3 key, which can facilitate stored cross-site scripting via malicious SVG files.

SeverityMedium
CVSS4.3
Exploit probability—
ProductFoxtool All-in-One: Contact chat button, Custom login, Media optimize images
PublishedSep 18, 2026
First seenSep 18, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
foxtheme Foxtool All-in-One: Contact chat button, Custom login, Media optimize imagesv ≤ 2.5.3—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.

CVE-2026-18317 · Foxtool All-in-One: Contact chat button, Custom login, Media optimize images · Dark Radar