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CVE-2026-6566— Photo Gallery, Sliders, Proofing and Themes <= 4.2.0 - Insecure Direct Object Reference to Authenticated (Subscriber+) Image Deletion via REST API

Quick assessment

Affected
smub Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin NextGEN Gallery 4.2.0及之前版本存在安全漏洞，该漏洞源于对象级授权不足，可能导致具有订阅者权限和NextGEN Manage gallery能力的认证攻击者删除其他用户的图库图像及其关联文件。

CVSS 4.3 · Medium EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
smub Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery ≤ 4.2.0 affected
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I. Basic Information for CVE-2026-6566

Vulnerability Information
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Vulnerability Title
Photo Gallery, Sliders, Proofing and Themes <= 4.2.0 - Insecure Direct Object Reference to Authenticated (Subscriber+) Image Deletion via REST API
Source: CVE Program / CVE List V5
Vulnerability Description
The Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 4.2.0. This is due to insufficient object-level authorization in the image deletion REST flow where the permission callback for DELETE /imagely/v1/images/{id} only checks 'NextGEN Manage gallery' permissions and does not enforce gallery ownership or 'NextGEN Manage others gallery' permissions. This makes it possible for authenticated attackers, with Subscriber-level privileges and 'NextGEN Manage gallery' capability, to delete gallery images belonging to other users as well as their associated image files from disk when deleteImg is enabled (default).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin NextGEN Gallery 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin NextGEN Gallery 4.2.0及之前版本存在安全漏洞，该漏洞源于对象级授权不足，可能导致具有订阅者权限和NextGEN Manage gallery能力的认证攻击者删除其他用户的图库图像及其关联文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
smub Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery 0 ~ 4.2.0 -

II. Public POCs for CVE-2026-6566

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III. Intelligence Information for CVE-2026-6566

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Vendor Advisories for CVE-2026-6566 (1)

IV. Related Vulnerabilities

Same product: Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery
Same vendor: smub
Same weakness: CWE-639

V. Comments for CVE-2026-6566

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