addfunc AddFunc Head & Footer Code Plugin up to 2.3 on WordPress Custom Fields Interface register_meta aFhfc_head_code/aFhfc_body_code/aFhfc_footer_code cross site scripting

Summaryinfo

A vulnerability described as problematic has been identified in addfunc AddFunc Head & Footer Code Plugin up to 2.3 on WordPress. Affected is the function register_meta of the component Custom Fields Interface. The manipulation of the argument aFhfc_head_code/aFhfc_body_code/aFhfc_footer_code results in cross site scripting. This vulnerability was named CVE-2026-2305. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in addfunc AddFunc Head & Footer Code Plugin up to 2.3 on WordPress. Affected is the function register_meta of the component Custom Fields Interface. The manipulation of the argument aFhfc_head_code/aFhfc_body_code/aFhfc_footer_code with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

The AddFunc Head & Footer Code plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `aFhfc_head_code`, `aFhfc_body_code`, and `aFhfc_footer_code` post meta values in all versions up to, and including, 2.3. This is due to the plugin outputting these meta values without any sanitization or escaping. While the plugin restricts its own metabox and save handler to administrators via `current_user_can('manage_options')`, it does not use `register_meta()` with an `auth_callback` to protect these meta keys. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts via the WordPress Custom Fields interface that execute when an administrator previews or views the post.

The weakness was presented by Muhammad Yudha. The advisory is available at wordfence.com. This vulnerability is traded as CVE-2026-2305 since 02/10/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 2.3 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• addfunc

Name

• AddFunc Head & Footer Code Plugin

Version

• 2.0
• 2.1
• 2.2
• 2.3

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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