Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery <= 4.4.1 - Authenticated (Custom+) Remote Code Execution via XML-RPC 'meta_data' Mass Assignment and Path Traversal
Summary
| CVE | CVE-2026-76010 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-31 10:16:38 UTC |
| Updated | 2026-11-02 16:19:19 UTC |
| Description | The Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.4.1 via the render_image function. This is due to unrestricted mass assignment of caller-supplied meta_data keys onto the image model combined with missing realpath containment in path construction and a bypassable signature check on the public image delivery route. This makes it possible for authenticated attackers, with custom-level access and above, to execute code on the server. Exploitation requires the authenticated attacker to own at least one NextGEN gallery — a condition that can be satisfied by any Subscriber who was ever granted the 'NextGEN Manage gallery' capability, and that access is retained indefinitely due to the stored gallery-author equality fallback in _can_manage_gallery() even after the capability is revoked. |
Risk And Classification
Primary CVSS: v3.1 8.8 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.007720000 probability, percentile 0.556940000 (date 2026-11-02)
Problem Types: CWE-434 | CWE-434 CWE-434 Unrestricted Upload of File with Dangerous Type
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Smub | Photo Gallery Sliders Proofing And Themes NextGEN Gallery | affected 4.4.1 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.wordfence.com/threat-intel/vulnerabilities/id/36dcde20-0af2-4b8b-8637-9a070... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.3.0/src/XMLRPC/Controller.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.3.0/src/DataStorage/Manager.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.3.0/src/DataStorage/Manager.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/changeset/3699076/nextgen-gallery/trunk/src/DataStorage/Manag... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.3.0/src/DataStorage/Manager.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.3.0/src/XMLRPC/Controller.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.3.0/src/DynamicThumbnails/Cont... | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: khanhnv (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-08-18T19:12:07.000Z | Vendor Notified |
| CNA | 2026-10-30T21:10:34.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.