CVE-2026-21516CWE-77

GitHub Copilot for Jetbrains Remote Code Execution Vulnerability

High · published February 10, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
59.8
In the wild
Unconfirmed
What it is

⚡ A crafty command injection in GitHub Copilot lets unauthorized attackers run code just by sending a specially crafted request — like a chef adding rogue ingredients to a dish without anyone noticing! 🔥 Think of it like a restaurant where anyone can sneak in and change the recipe on the menu without the chef's knowledge. This results in dishes that not only taste off but could also be harmful to diners! An attacker could potentially gain full control over the system, executing arbitrary commands that could lead to data breaches, service disruptions, or even full network compromise. The consequences could be absolutely devastating, impacting not just the application but also its users and their sensitive data.

Put simply

Think of it like a restaurant where anyone can sneak in and change the recipe on the menu without the chef's knowledge. This results in dishes that not only taste off but could also be harmful to diners! This vulnerability arises from improper neutralization of special elements used in commands, allowing attackers to inject code remotely via crafted commands sent to GitHub Copilot, bypassing standard security measures.

What to do

An attacker could potentially gain full control over the system, executing arbitrary commands that could lead to data breaches, service disruptions, or even full network compromise. The consequences could be absolutely devastating, impacting not just the application but also its users and their sensitive data. Update to the latest version of GitHub Copilot to close this vulnerability. Ensure that all input is properly validated and sanitized to prevent command injections. Regularly audit your security practices to catch potential loopholes early. 🛡️ You've got this! Stay vigilant and follow these steps, and you'll keep your systems safe and sound! 😄

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00916 · 59.8th percentile
Weakness
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-02-10T17:51Z
EPSS history
Timeline
  • 10 FEB 17:51Z
    GitHub Copilot for Jetbrains Remote Code Execution Vulnerability
    cvelistv5