Exploit discussion active in current signal (1 latest mentions)
Recommended action window: High priority (within 72h)
NVD description
Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
| Date | Total | Labels |
|---|
| 2026-02-10 | 1 | General1 |
| 2026-02-13 | 1 | Patch1 |
| 2026-02-21 | 1 | Disclosure1 |
| 2026-04-03 | 1 | Disclosure1 |
I found RCE in VS Code CVE-2026-21518 https://msrc.microsoft.com/update-guide/advisory/CVE-2026-21518 https://t.co/Cg2KTjYr7y
Post summary
The user reports discovering a remote code execution vulnerability in VS Code (CVE-2026-21518) and links to the official Microsoft advisory; no exploit code or active exploitation is mentioned.
🚨 CVE-2026-21518: GitHub Copilot VS Code Command Injection Vulnerability 🚨 A command injection flaw in GitHub Copilot for Visual Studio Code allows unauthenticated attackers to execute system commands via crafted network payloads. Public PoC available targeting developer environments. Risk Severity: Medium (CVSS 6.5, unauthenticated, high-value targets) Impact: Developer workstation compromise Source code theft Supply chain poisoning Cloud credential theft Enterprise lateral movement Root Cause: CWE-78 (OS Command Injection) – Improper neutralization of attacker-controlled network input before execution in VS Code extension host. Attackers can: Execute arbitrary system commands Steal API keys & cloud credentials Access proprietary source code Implant malicious commits Compromise CI/CD pipelines Are You Affected? Vulnerable: GitHub Copilot VS Code extension versions prior to security patch Remote VS Code Server deployments Network-exposed developer environments Fixed in: Latest GitHub Copilot extension release (February 2026 security fix) Immediate Action Required: Update/Patch: Update GitHub Copilot extension immediately Mitigation (if patching is delayed): Temporarily disable Copilot Restrict network access to VS Code instances Enforce VPN-only developer access Implement IP allowlisting Audit & Monitor: Hunt for VS Code spawning shell processes Monitor child processes from Code.exe Review EDR logs for command injection indicators Inspect recent source code commits for backdoors Compromising developer tooling enables full supply-chain attacks — patch immediately and assume breach risk. 🔐 #ostorlabCVE
Post summary
GitHub Copilot VS Code extension is vulnerable to OS command injection (CVE‑2026‑21518). A public PoC exists, but no active exploitation has been reported; patches are available and should be applied immediately.
CVE-2026-21518 Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to bypass… https://www.cve.org/CVERecord?id=CVE-2026-21518
Post summary
The CVE notes a command injection flaw in GitHub Copilot and Visual Studio Code but provides no PoC, exploit, or patch details.
Microsoft Visual Studio Code mcp.json Command Injection Remote Code Execution Vulnerability (CVE-2026-21518) #CVE202621518 #CyberSecurity #Microsoft #RemoteCodeExecutionVulnerability https://www.systemtek.co.uk/?p=48983 https://t.co/IN5QxJtRRF
Post summary
A tweet announces a new remote code execution vulnerability (CVE-2026-21518) in Visual Studio Code's mcp.json, providing only a basic technical description without PoC, exploit code, evidence of active use, or patch information.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | microsoft | visual_studio_code | - | - | - |