CVE-2026-39987 — Updated!

CVE-2026-39987 Exploit POC Overview This repository contains a Proof-of-Concept POC script for CVE-2026-39987, a pre-authentication Remote Code Execution RCE vulnerability in Marimo. The exploit leverages a WebSocket endpoint to execute arbitrary commands on the target system. Vulnerability Detai...

CVE-2026-84381

HTTPX2 is a next generation HTTP client for Python. Prior to 2.10.0, httpcore2 fails to start TLS in src/httpcore2/httpcore2/sync/socksproxy.py and src/httpcore2/httpcore2/async/socksproxy.py when the remote origin uses wss through a SOCKS5 proxy because the TLS upgrade condition only recognizes...

CVE-2026-84381

HTTPX2 is a next generation HTTP client for Python. Prior to 2.10.0, httpcore2 fails to start TLS in src/httpcore2/httpcore2/sync/socksproxy.py and src/httpcore2/httpcore2/async/socksproxy.py when the remote origin uses wss through a SOCKS5 proxy because the TLS upgrade condition only recognizes...

UBUNTU-CVE-2026-84381

HTTPX2 is a next generation HTTP client for Python. Prior to 2.10.0, httpcore2 fails to start TLS in src/httpcore2/httpcore2/sync/socksproxy.py and src/httpcore2/httpcore2/async/socksproxy.py when the remote origin uses wss through a SOCKS5 proxy because the TLS upgrade condition only recognizes...

CVE-2026-84381 HTTPX2: Secure WebSocket traffic sent without TLS through SOCKS proxies

HTTPX2 is a next generation HTTP client for Python. Prior to 2.10.0, httpcore2 fails to start TLS in src/httpcore2/httpcore2/sync/socksproxy.py and src/httpcore2/httpcore2/async/socksproxy.py when the remote origin uses wss through a SOCKS5 proxy because the TLS upgrade condition only recognizes...

CVE-2026-84381

HTTPX2 is a next-generation HTTP client for Python. Prior to 2.10.0 , the underlying httpcore2 library failed to initiate TLS when a WebSocket connection (wss) was routed through a SOCKS5 proxy , because the TLS upgrade condition only recognized the https scheme. As a result, the WebSocket handsh...

CVE-2026-84381 HTTPX2: Secure WebSocket traffic sent without TLS through SOCKS proxies

HTTPX2 is a next generation HTTP client for Python. Prior to 2.10.0, httpcore2 fails to start TLS in src/httpcore2/httpcore2/sync/socksproxy.py and src/httpcore2/httpcore2/async/socksproxy.py when the remote origin uses wss through a SOCKS5 proxy because the TLS upgrade condition only recognizes...

Denial-of-service (DoS)

Http4s http4s-blaze-server is vulnerable to a denial-of-service DoS. The vulnerability is due to the server aggregating incoming WebSocket message fragments without enforcing a limit on the total message size or fragment count, which allows an attacker to establish a WebSocket connection and...

CVE-2026-84381: Cleartext Transmission of Sensitive Information

HTTPX2 is a next generation HTTP client for Python. Prior to 2.10.0, httpcore2 fails to start TLS in src/httpcore2/httpcore2/sync/socksproxy.py and src/httpcore2/httpcore2/async/socksproxy.py when the remote origin uses wss through a SOCKS5 proxy because the TLS upgrade condition only recognizes...

PT-2026-84848

Name of the Vulnerable Software and Affected Versions httpcore2 versions prior to 2.10.0 HTTPX2 versions 2.6.0 through 2.9.1 Description An issue exists where TLS fails to start when a remote origin uses wss WebSocket Secure through a SOCKS5 proxy because the TLS upgrade condition only recognizes...

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This Metasploit module exploits CVE-2026-48558 to forge an OpenID Connect identity token and obtain a SimpleHelp technician session. It then uses SimpleHelps legitimate remote access WebSocket protocol to connect to an online managed machine and execute a payload through the remote terminal. An...

Marimo 0.20.4 - RCE

Title: Marimo 0.20.4 - RCE Date: August 2nd, 2026 Exploit Author: Jason Bernier Vendor Homepage: https://marimo.io/ Software Link: https://github.com/marimo-team/marimo Version: str: """Send command to target and receive output""" try: if not conn: print"- No active connection" return ""...

Linux Distros Unpatched Vulnerability : CVE-2026-84373

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in...

CVE-2026-84373

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...

CVE-2026-84373

A flaw was found in Vitest, a testing framework. A remote attacker, able to reach an exposed development server, could exploit an issue in the mockerPlugin and interceptorPlugin exports. These plugins register a handler on Vite's unauthenticated HMR WebSocket without properly validating redirect...

Exploit for Missing Authentication for Critical Function in Coreweave Marimo

CVE-2026-39987 — Marimo Pre-Auth RCE via Terminal WebSocket...

CVE-2026-84373

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...

CVE-2026-84373 Vitest: Path Traversal / Arbitrary File Read via @vitest/mocker Redirect Mock

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...

CVE-2026-84373 Vitest: Path Traversal / Arbitrary File Read via @vitest/mocker Redirect Mock

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...

CVE-2026-84373 Vitest: Path Traversal / Arbitrary File Read via @vitest/mocker Redirect Mock

Vitest is a testing framework powered by Vite. From 2.1.0 until 4.1.11 and 5.0.0-rc.2, the public mockerPlugin and standalone interceptorPlugin exports in packages/mocker/src/node/interceptorPlugin.ts register the vitest:interceptor:register handler on Vite's unauthenticated HMR WebSocket without...