wpchill Modula Image Gallery Plugin up to 3.0.1 on WordPress Gallery Metadata Modula_Meta::add_metas modula_gallery_id information disclosure

Summaryinfo

A vulnerability classified as problematic was found in wpchill Modula Image Gallery Plugin up to 3.0.1. This issue affects the function Modula_Meta::add_metas of the component Gallery Metadata. Executing a manipulation of the argument modula_gallery_id can lead to information disclosure. The identification of this vulnerability is CVE-2026-89406. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in wpchill Modula Image Gallery Plugin up to 3.0.1 and classified as problematic. This vulnerability affects the function Modula_Meta::add_metas of the component Gallery Metadata. The manipulation of the argument modula_gallery_id with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

The Modula Image Gallery – Photo Grid & Video Gallery plugin for WordPress is vulnerable to unauthorized disclosure of private gallery contents in versions up to, and including, 3.0.1. This is due to the Modula_Meta::add_metas() function being hooked to wp_head on every frontend request and looking up any post via get_post( $_GET['modula_gallery_id'] ) without verifying the gallery's post_status or the requester's capability to read it — the gallery-side input guard is bugged (empty('modula_gallery_id') tests a nonempty string literal instead of the GET parameter, so it is always false), the only object validation is a post_type === 'modula-gallery' check, and no is_user_logged_in()/current_user_can('read_post', $gallery_id) check is performed. This makes it possible for unauthenticated attackers to enumerate private modula-gallery posts and their member attachments and recover the image's title, description, dimensions, and original upload URL via Open Graph/Twitter meta tags emitted in the response, which then allows direct unauthenticated download of the original private image bytes.

The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-89406 since 09/11/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/25/2026). The MITRE ATT&CK project declares the attack technique as T1592.

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

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Productinfo

Type

• WordPress Plugin

Vendor

• wpchill

Name

• Modula Image Gallery Plugin

Version

• 3.0.0
• 3.0.1

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CPE 2.2info

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