Astra Linux – Vulnerability in Firefox

Even when an iframe was sandboxed with allow-top-navigation-by-user-activation, if it received a redirect header to an external protocol, the browser would process the redirect and prompt the user appropriately. This vulnerability affects Firefox versions earlier than 102...

CVE-2026-70612

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could...

NPM: Electron: Sandboxed iframes can launch external protocol handlers

NPM: Electron: Sandboxed iframes can launch external protocol handlers vulnerability discovered by ? in WordPress Npm electron versions 39.8.8...

Electron: Sandboxed iframes can launch external protocol handlers

Impact Requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could cause an OS-registered external application to be launched. The frame's sandbox state was also not made available to the app's permission handlers. Ap...

GHSA-P2RR-RVMM-C5FP Electron: Sandboxed iframes can launch external protocol handlers

Impact Requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could cause an OS-registered external application to be launched. The frame's sandbox state was also not made available to the app's permission handlers. Ap...

CVE-2026-70612 Electron: Sandboxed iframes can launch external protocol handlers

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could...

CVE-2026-70612 Electron: Sandboxed iframes can launch external protocol handlers

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could...

CVE-2026-70612

The vulnerability CVE-2026-70612 affects Electron. It occurs when web content in sandboxed iframes can trigger external protocol handlers, because iframe sandbox restrictions were not applied to openExternal requests and the frame state wasn’t exposed to permission handlers. This could allow an O...

CVE-2026-70612 Electron: Sandboxed iframes can launch external protocol handlers

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could...

CVE-2026-43941 Unvalidated shell.openExternal in electerm allows arbitrary protocol execution via terminal link click

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. In versions 3.8.15 and prior, Electerm's terminal hyperlink handler passes any URL clicked in the terminal directly to shell.openExternal without any protocol validation. An attacker who controls terminal...

CVE-2025-67230

Improper permissions in the handler for the Custom URL Scheme in ToDesktop Builder v0.33.0 allows attackers with renderer-context access to invoke external protocol handlers without sufficient validation...

CVE-2025-67230

Improper permissions in the handler for the Custom URL Scheme in ToDesktop Builder v0.33.0 allows attackers with renderer-context access to invoke external protocol handlers without sufficient validation...

CVE-2025-67230

Improper permissions in the handler for the Custom URL Scheme in ToDesktop Builder v0.33.0 allows attackers with renderer-context access to invoke external protocol handlers without sufficient validation...

CVE-2025-3839 Epiphany: insecure external protocol invocation in epiphany

A flaw was found in Epiphany, a tool that allows websites to open external URL handler applications with minimal user interaction. This design can be misused to exploit vulnerabilities within those handlers, making them appear remotely exploitable. The browser fails to properly warn or gate this...

CVE-2025-3839 Epiphany: insecure external protocol invocation in epiphany

A flaw was found in Epiphany, a tool that allows websites to open external URL handler applications with minimal user interaction. This design can be misused to exploit vulnerabilities within those handlers, making them appear remotely exploitable. The browser fails to properly warn or gate this...

CVE-2025-3839 Epiphany: insecure external protocol invocation in epiphany

A flaw was found in Epiphany, a tool that allows websites to open external URL handler applications with minimal user interaction. This design can be misused to exploit vulnerabilities within those handlers, making them appear remotely exploitable. The browser fails to properly warn or gate this...

CVE-2025-3839

CVE-2025-3839 affects Epiphany. A flaw in how Epiphany opens external URL handler applications with minimal user interaction can be abused to execute code on the client via trusted UI behavior. The root cause is insecure invocation of external handlers, enabling potential remote-looking actions w...

ToDesktop Builder security vulnerabilities

ToDesktop Builder is a desktop application building tool developed by ToDesktop Company in Ireland. Version 0.33.0 of ToDesktop Builder contains a security vulnerability. This vulnerability stems from improper permissions granted to the custom URL scheme handler, which may allow attackers to invo...

CVE-2025-67230: Incorrect Default Permissions

Improper permissions in the handler for the Custom URL Scheme in ToDesktop Builder v0.33.0 allows attackers with renderer-context access to invoke external protocol handlers without sufficient validation...

CVE-2025-67230

Improper permissions in the handler for the Custom URL Scheme in ToDesktop Builder v0.33.0 allows attackers with renderer-context access to invoke external protocol handlers without sufficient validation...