EIP-2026-103021

PRE-CVE

Tor (Linux) - X11 Linux Sandbox Breakout

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103021. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit demonstrates a sandbox escape in the Tor Browser's Linux sandbox by leveraging the XTEST X protocol extension to inject keyboard/mouse events, allowing arbitrary command execution outside the sandbox. It uses xdotool to simulate keypresses and open a terminal, then executes commands.

Description

Tor (Linux) - X11 Linux Sandbox Breakout

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · clocallinux
https://www.exploit-db.com/exploits/42626

This exploit demonstrates a sandbox escape in the Tor Browser's Linux sandbox by leveraging the XTEST X protocol extension to inject keyboard/mouse events, allowing arbitrary command execution outside the sandbox. It uses xdotool to simulate keypresses and open a terminal, then executes commands.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Tor Browser Sandbox (Linux) 7.0a4 with sandbox-0.0.6
No auth needed
Prerequisites: Access to the sandboxed Tor Browser environment · xdotool installed in the sandbox · X11 server access
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026