# CVE-2026-76010: NextGEN Gallery remote code execution via unrestricted mass assignment

Source: https://junglewise.ai/threats/cve-2026-76010-the-photo-gallery-sliders-proofing-and-themes-nextgen-gallery  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-31. Updated: 2026-10-31  
License: CC BY 4.0 with a link back

CVE-2026-76010 · Severity: high · CVSS 8.8 · Published 2026-10-31

NextGEN Gallery is a WordPress plugin for managing photo galleries and sliders. A vulnerability in its image rendering function allows authenticated attackers who own a gallery to execute arbitrary code on the server. Because gallery ownership persists indefinitely even after permissions are revoked, former contributors retain this capability.

Vendors: [Wordpress](https://junglewise.ai/threats/vendors/wordpress).

## Quick answers

**Is CVE-2026-76010 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-76010 being exploited in the wild.

**How severe is CVE-2026-76010?** High severity, with a CVSS score of 8.8, published 31 October 2026.

**Which products and versions are affected?** Wordpress NextGEN Gallery up to 4.4.1.

**Is there a fix for CVE-2026-76010?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-76010 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-76010?** Check whether you run Wordpress NextGEN Gallery at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The render_image function is vulnerable to unrestricted mass assignment of caller-supplied meta_data keys onto the image model, combined with a missing realpath check in path construction and a bypassable signature check on the public image delivery route. An authenticated attacker with custom-level access or above who owns at least one gallery can exploit this to achieve remote code execution. The vulnerability persists across version upgrades due to stored gallery-author equality checks that do not revoke access when capabilities are removed.

## Affected products

- WordPress NextGEN Gallery up to 4.4.1

## Timeline

- 2026-10-31: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.3.0/src/DataStorage/Manager.php](https://plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.3.0/src/DataStorage/Manager.php)
- [https://plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.3.0/src/DataStorage/Manager.php](https://plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.3.0/src/DataStorage/Manager.php)