Microsoft GitHub Copilot für JetBrains: Schwachstelle ermöglicht Codeausführung
WID-SEC-2026-0368 · first 11.02.2026 · updated 11.02.2026 · CVSS 8,8
What it is about
Microsoft GitHub Copilot ist ein KI-gestützter Programmierassistent, der Codevorschläge und Vervollständigungen direkt in der Entwicklungsumgebung bietet. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Microsoft GitHub Copilot ausnutzen, um beliebigen Programmcode auszuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- beliebigen Programmcode auszuführen
Am I affected?
Affected according to the BSI:
- Microsoft GitHub Copilot Plugin for JetBrains IDEs
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Install the updates provided by the vendor; details in the sources below.
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Microsoft Leitfaden für Sicherheitsupdates msrc.microsoft.com
CVE: CVE-2026-21516
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.