CVE-2026-121663 in Visual Studio Code

Summary

by MITRE • 11/10/2026

Incomplete list of disallowed inputs in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.

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• Responsible: Microsoft
• Reservation: 11/03/2026
• Disclosure: 11/10/2026
• Moderation: accepted
• Entry: VDB-434303
• CPE: ready
• CWE: CWE-285 (confirmed)
• CVSS: 8.8 (CNA)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Telecommunication, Hostingprovider

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-121663
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-121663
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-121663/