firefox: thunderbird: Sandbox escape in the DOM: Navigation component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape in the DOM: Navigation component...

firefox: thunderbird: Undefined behavior in the DOM: Streams component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Undefined behavior in the DOM: Streams component...

firefox: firefox: Sandbox escape via use-after-free in DOM component

A flaw was found in Firefox. A use-after-free memory flaw in the Document Object Model DOM Core and HTML component allows a remote attacker to perform a sandbox escape. By enticing a user to visit a specially crafted web page, an attacker can leverage this vulnerability to execute arbitrary code...

firefox: Sandbox escape due to use-after-free in the DOM: Content Processes component

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to use-after-free in the DOM: Content Processes component...

firefox: thunderbird: Use-after-free in the DOM: Core & HTML component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Core & HTML component...

firefox: Sandbox escape due to use-after-free in the DOM: Content Processes component

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to use-after-free in the DOM: Content Processes component...

firefox: thunderbird: Privilege escalation in the DOM: Service Workers component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the DOM: Service Workers component...

firefox: thunderbird: Use-after-free in the DOM: Core & HTML component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Core & HTML component...

firefox: Use-after-free in the DOM: Core & HTML component

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Core & HTML component...

firefox: Sandbox escape due to use-after-free in the DOM: Core & HTML component

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to use-after-free in the DOM: Core & HTML component...

firefox: Use-after-free in the DOM: Core & HTML component

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Core & HTML component...

CVE-2026-118660

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 21.0.0, Happy DOM loads iframe src URLs and link rel="stylesheet" href URLs by default while parsing untrusted HTML on the server because disableIframePageLoading and disableCSSFileLoading...

CVE-2026-118661

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 20.14.6, Happy DOM's CookieContainer in src/cookie/CookieContainer.ts does not correctly validate or match Domain cookie attributes. It can accept a Domain unrelated to the origin setting the...

CVE-2026-118659

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 21.0.2, the Happy DOM server-renderer package's ServerRendererServer accepts unauthenticated HTTP/2 requests and resolves attacker-controlled :path values against server.targetOrigin in...

Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML

Summary happy-dom v20.8.9 makes real server-side HTTP requests to arbitrary URLs when parsing HTML containing or elements. This behavior is enabled by default disableIframePageLoading: false, disableCSSFileLoading: false. When an application uses happy-dom to parse untrusted HTML on the server...

GHSA-C8P4-J97H-3VG8 Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML

Summary happy-dom v20.8.9 makes real server-side HTTP requests to arbitrary URLs when parsing HTML containing or elements. This behavior is enabled by default disableIframePageLoading: false, disableCSSFileLoading: false. When an application uses happy-dom to parse untrusted HTML on the server...

npm: Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML

npm: Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML vulnerability discovered by ? in WordPress npm happy-dom versions = 20.14.6...

Happy DOM has cookie scope forgery: no DNS-label boundary on Domain= matching , attacker origin sets victim cookies

Summary A cookie-scoping bug in happy-dom lets an attacker origin set cookies that a victim origin then receives, diverging from browser semantics. Details happy-dom matches Domain=example.com against notexample.com endsWith without a DNS-label boundary, diverging from browser semantics verified...

GHSA-5FPQ-26GF-QWCR Happy DOM has cookie scope forgery: no DNS-label boundary on Domain= matching , attacker origin sets victim cookies

Summary A cookie-scoping bug in happy-dom lets an attacker origin set cookies that a victim origin then receives, diverging from browser semantics. Details happy-dom matches Domain=example.com against notexample.com endsWith without a DNS-label boundary, diverging from browser semantics verified...

npm: Happy DOM has cookie scope forgery: no DNS-label boundary on Domain= matching , attacker origin sets victim cookies

npm: Happy DOM has cookie scope forgery: no DNS-label boundary on Domain= matching , attacker origin sets victim cookies vulnerability discovered by ? in WordPress npm happy-dom versions = 20.14.5...