WordPress Plugin Bypasses Gallery Access Controls

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

Casky was already ahead

This CVE exploits attack patterns that Casky's 283matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

The Modula Image Gallery plugin for WordPress contains an authorization flaw that exposes private gallery contents to unauthenticated users. The vulnerability exists in the Modula_Meta::add_metas() function, which retrieves gallery data via the 'modula_gallery_id' GET parameter without validating the post status or user permissions. An attacker can enumerate gallery IDs and access sensitive, non-public image collections by directly requesting them through the vulnerable endpoint. This affects all WordPress sites running Modula Image Gallery up to version 3.0.1, potentially exposing confidential photos, client work, or private media to unauthorized disclosure.

Casky's 283 mapped skills leverage Claude's extended reasoning to identify the attack patterns underlying this vulnerability across MITRE techniques TA0004 (Privilege Escalation) and TA0006 (Credential Access). Practitioners using Casky would detect suspicious reconnaissance activity—repeated requests to wp-head with varying modula_gallery_id parameters—which signals enumeration attempts. The platform correlates these requests with missing capability checks (CWE-862: Missing Authorization) to surface findings such as unauthorized post retrieval calls, absence of is_user_logged_in() or current_user_can() validations, and direct $_GET parameter usage without post_status verification. Security teams gain visibility into both the attack chain and remediation priority, enabling rapid plugin updates and access control reviews.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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283 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-89406.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0004 TA0006

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