Foxtheme Foxtool All-in-One Contact chat button up to 2.5.3 on WordPress Settings Authorization media-up3 authorization

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Foxtheme Foxtool All-in-One Contact chat button, Custom login and Media optimize images Plugin up to 2.5.3. This affects an unknown part of the component Settings Authorization. The manipulation of the argument media-up3 leads to authorization. This vulnerability is uniquely identified as CVE-2026-18317. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Foxtheme Foxtool All-in-One Contact chat button, Custom login and Media optimize images Plugin up to 2.5.3. This issue affects an unknown functionality of the component Settings Authorization. The manipulation of the argument media-up3 with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is integrity. The summary by CVE is:

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.

It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-18317 since 07/29/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/18/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Foxtheme

Name

• Custom login
• Foxtool All-in-One Contact chat button
• Media optimize images Plugin

Version

• 2.5.0
• 2.5.1
• 2.5.2
• 2.5.3

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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