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CVE-2026-77114

Document Gallery <= 5.1.1 - Unauthenticated Stored Cross-Site Scripting

The Document Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'dg_thumber_webhook' Action Request Body in all versions up to, and including, 5.1.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that logging be enabled in the plugin's Advanced settings, which is only the default state when WP_DEBUG is true; otherwise an administrator must manually enable it.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Dan Rossiter Wordpress-extensions
Products
Document Gallery Document Gallery
CVE-2026-74922

Document Gallery 4.1 - 5.1.1 - Unauthenticated Document Thumbnail Replacement via Thumber Webhook Signature Bypass

The Document Gallery WordPress plugin through 5.1.1 does not verify the signature on one of its unauthenticated webhook endpoints when no shared secret has been configured, which is the default state, allowing unauthenticated users to replace the thumbnail image the site publishes for any document.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Wordpress-extensions
Products
Document Gallery
CVE-2026-74921

Document Gallery 4.0 - 5.1.1 - Contributor+ Stored XSS via Gallery Shortcode Attributes

The Document Gallery WordPress plugin through 5.1.1 does not sanitise or escape several gallery shortcode attributes before embedding them in a single-quoted HTML attribute in the rendered gallery markup, allowing users with the Contributor role and above to inject arbitrary event handlers that execute when a higher privileged user views the content.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Wordpress-extensions
Products
Document Gallery
CVE-2026-74920

Document Gallery <= 5.1.1 - Reflected XSS via data-shortcode Attribute

The Document Gallery WordPress plugin through 5.1.1 does not properly sanitise and escape user input before reflecting it inside an HTML attribute in the response of an unauthenticated AJAX action, leading to a Reflected Cross-Site Scripting vulnerability which can be exploited against any visitor, including a logged-in administrator.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Wordpress-extensions
Products
Document Gallery
CVE-2026-74923

Document Gallery <= 5.1.1 - Unauthenticated Non-Public Attachment Disclosure via dg_generate_gallery and dg_generate_icons

The Document Gallery WordPress plugin through 5.1.1 does not perform any capability or ownership check when generating a gallery on demand, allowing unauthenticated users to enumerate and disclose the titles, descriptions and direct file URLs of media attached to unpublished, private or trashed content.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Wordpress-extensions
Products
Document Gallery
CVE-2026-39781

WordPress Document Gallery plugin <= 5.1.1 - Cross Site Scripting (XSS) vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Dan Rossiter Document Gallery document-gallery allows Reflected XSS.This issue affects Document Gallery: from n/a through 5.1.1.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Dan Rossiter Wordpress-extensions
Products
Document Gallery Document Gallery