CVE-2026-34226

A flaw was found in Happy DOM, a JavaScript implementation of a web browser without its graphical user interface. This vulnerability allows for information disclosure where cookies from the current page's origin can be inadvertently attached to network requests made to a different destination. Th...

EUVD-2026-16893

Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies...

GHSA-W4GP-FJGQ-3Q4G Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies

Summary happy-dom may attach cookies from the current page origin window.location instead of the request target URL when fetch..., credentials: "include" is used. This can leak cookies from origin A to destination B. Details In packages/happy-dom/src/fetch/utilities/FetchRequestHeaderUtility.ts...

Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies

Summary happy-dom may attach cookies from the current page origin window.location instead of the request target URL when fetch..., credentials: "include" is used. This can leak cookies from origin A to destination B. Details In packages/happy-dom/src/fetch/utilities/FetchRequestHeaderUtility.ts...

Insertion of Sensitive Information Into Sent Data

Overview happy-dom is a Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML. Affected versions of this package are vulnerable to Insertion of Sensitive Information Into Sent Data via the fetch...

Insertion of Sensitive Information Into Sent Data

Overview org.webjars.npm:happy-dom is a Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML. Affected versions of this package are vulnerable to Insertion of Sensitive Information Into Sent Data vi...

CVE-2026-34226

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Versions prior to 20.8.9 may attach cookies from the current page origin window.location instead of the request target URL when fetch..., credentials: "include" is used. This can leak cookies from orig...

CVE-2026-34226 Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Versions prior to 20.8.9 may attach cookies from the current page origin window.location instead of the request target URL when fetch..., credentials: "include" is used. This can leak cookies from orig...

CVE-2026-34226

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Versions prior to 20.8.9 may attach cookies from the current page origin window.location instead of the request target URL when fetch..., credentials: "include" is used. This can leak cookies from orig...

CVE-2026-34226 Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Versions prior to 20.8.9 may attach cookies from the current page origin window.location instead of the request target URL when fetch..., credentials: "include" is used. This can leak cookies from orig...

WPLegalPages < 2.7.1 - Subscriber+ Arbitrary Settings Update to Stored XSS

The plugin does not check for authorisation and has a flawed CSRF logic when saving its settings, allowing any authenticated users, such as subscriber, to update them. Furthermore, due to the lack of sanitisation and escaping, it could lead to Stored Cross-Site Scripting Run the below command in...

Event Calendar < 1.1.51 - Subscriber+ Event Creation

The plugin does not have proper authorisation and CSRF checks in the addcalendarevent AJAX actions, allowing users with a role as low as subscriber to create events Adding calendar events: fetch"https://example.com/wp-admin/admin-ajax.php", "headers": "content-type":...