XSS2Shell: WordPress Preauth XSS to RCE Chain (CVE-2026-64638)
A pre-authentication XSS to RCE chain in WordPress Core that allows unauthenticated attackers to achieve remote code execution on any default WordPress installation through the login page.
The HTTP protocol plays a vital role in the seamless functioning of web applications, however, the implementation of HTTP parsers across different technologies can introduce subtle discrepancies, leading to potential security loopholes.
In this resea...
Breaking ONLYOFFICE in 3 steps: OnlyShells vulnerability chain
Technical breakdown of OnlyShells — a five-vulnerability chain in ONLYOFFICE Desktop Editors combining zero-click XSS, a Chromium V8 RCE, and an update-service LPE to achieve remote code execution as NT AUTHORITYSYSTEM when a victim opens a crafted document.
One Email Closer to the Edge: UNK_MassTraction & the Physics of Exploitation | Proofpoint US
Analyst note: Proofpoint uses the UNK_ designator to define clusters of activity that are still developing and have not been observed for long enough to receive a numerical TA designation. Key
Learn how to assess Next.js apps for SSRF, XSS, CSTI, SSTI, CSRF, cache issues, and data leaks. Practical tips, checks, and tools for bug bounty and pentesting.
Breaking Out of Restricted Mode: XSS to RCE in Visual Studio Code
In April 2024, I discovered a high-severity vulnerability in Visual Studio Code (VS Code = 1.89.1) that allows attackers to escalate a Cross-Site Scripting (XSS) bug into full Remote Code Execution (RCE)—even in Restricted Mode.
The desktop version of Visual Studio Code runs on Electron. Renderer processes are sandboxed and communicate with the main process through Electron’s IPC mechanism.
An XSS vulnerability in the newly-introduced minimal error rendering mode for Jupyter notebooks enables arbitrary JavaScript code to be executed within the vscode-app WebView for the notebook renderer.
Visual Studio Code - Remote Code Execution in Restricted Mode (CVE-2021-43908)
– by TheGrandPew and s1r1us
We all know, VSCode is one of the most used Electron App. As a part of our research on hacking electron apps, we thought it would be cool to pwn VSCode and we were able to pwn it. We were able to achieve RCE on VSCode without getting to use any of our new fancy stuff.
TL; DR Remote Code execution can be achieved when a victim opens a markdown file in a maliciously crafted VSCode Project or a folder even in VSCode Restricted Mode.
# 1. Background The Steam Chat client is a particularly interesting system to attack because it's built using a modern set of technologies with strong security characteristics. It's built on...