What is CVE-2026-23653?

CVE-2026-23653 is a medium-severity vulnerability in Microsoft Github_copilot_chat, classified under Command Injection. CVSS score: 5.7/10. Published 2026-04-14.

How severe is CVE-2026-23653?

Medium severity. CVSS v3 base score is 5.7 out of 10.

RCE in Microsoft Github_copilot_chat

CVE-2026-23653

Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio Code allows an authorized attacker to disclose information over a network.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.001 (27.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N.

Affected products

Microsoft Github_copilot_chat
Microsoft Visual Studio Code Copilot Chat Extension — versions 0.27.0

Weakness classification (CWE)

CWE-77 — Command Injection

References

GitHub Copilot and Visual Studio Code Information Disclosure Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-23653?: CVE-2026-23653 is a medium-severity vulnerability in Microsoft Github_copilot_chat, classified under Command Injection. CVSS score: 5.7/10. Published 2026-04-14.
How severe is CVE-2026-23653?: Medium severity. CVSS v3 base score is 5.7 out of 10.